CFrame positioning glitch?

Player = script.Parent.Parent
mouse = Player:GetMouse()
Doors = game.Workspace.Doors
function onKeyDown(key)

    key = key:lower()
    if key == "c" then
        wait(0.5)
        script.Disabled = true
        wait(0.5)
        Doors.DoorA.Size = Doors.DoorA.Size - Vector3.new(0,.5,0)
        Doors.DoorA.Position  = Vector3.new(-2, 5.6, -14.2)
        wait(0.5)
        Doors.DoorA.Position  = Vector3.new(-2, 5.6, -14.2)
        Doors.DoorA.Size = Doors.DoorA.Size - Vector3.new(0,.5,0)
        wait(0.5)
        Doors.DoorA.Position  = Vector3.new(-2, 5.6, -14.2)
        Doors.DoorA.Size = Doors.DoorA.Size - Vector3.new(0,.5,0)
        wait(0.5)
        Doors.DoorA.Position  = Vector3.new(-2, 5.6, -14.2)
        Doors.DoorA.Size = Doors.DoorA.Size - Vector3.new(0,.5,0)
        wait(0.5)
        Doors.DoorA.Position  = Vector3.new(-2, 5.6, -14.2)
        Doors.DoorA.Size = Doors.DoorA.Size - Vector3.new(0,.5,0)
        wait(0.5)
        Doors.DoorA.Position  = Vector3.new(-2, 5.6, -14.2)
        Doors.DoorA.Size = Doors.DoorA.Size - Vector3.new(0,.5,0)
        wait(0.5)
        Doors.DoorA.Position  = Vector3.new(-2, 5.6, -14.2)
        Doors.DoorA.Size = Doors.DoorA.Size - Vector3.new(0,.5,0)
        wait(0.5)
        Doors.DoorA.Position  = Vector3.new(-2, 5.6, -14.2)
        Doors.DoorA.Size = Doors.DoorA.Size - Vector3.new(0,.5,0)
        wait(0.5)
        Doors.DoorA.Position  = Vector3.new(-2, 5.6, -14.2)
        Doors.DoorA.Size = Doors.DoorA.Size - Vector3.new(0,.5,0)
        wait(0.5)
        Doors.DoorA.Position  = Vector3.new(-2, 5.6, -14.2)
        Doors.DoorA.Size = Doors.DoorA.Size - Vector3.new(0,.5,0)
        wait(0.5)
        Doors.DoorA.Position  = Vector3.new(-2, 5.6, -14.2)
        Doors.DoorA.Size = Doors.DoorA.Size - Vector3.new(0,.5,0)
        wait(0.5)
        Doors.DoorA.Position  = Vector3.new(-2, 5.6, -14.2)
        Doors.DoorA.Size = Doors.DoorA.Size - Vector3.new(0,.5,0)
        Doors.DoorA.Transparency = .2
        wait(0.5)
        Doors.DoorA.Position  = Vector3.new(-2, 5.6, -14.2)
        Doors.DoorA.Size = Doors.DoorA.Size - Vector3.new(0,.5,0)
        Doors.DoorA.Transparency = .5
        wait(0.5)
        Doors.DoorA.Position  = Vector3.new(-2, 5.6, -14.2)
        Doors.DoorA.Size = Doors.DoorA.Size - Vector3.new(0,.5,0)
        Doors.DoorA.Transparency = 1
        Doors.DoorA.CanCollide = false

        wait(2.5)
        Doors.DoorA.Position  = Vector3.new(-2, 5.6, -14.2)
        wait(0.5)
        Doors.DoorA.Position  = Vector3.new(-2, 5.6, -14.2)
        Doors.DoorA.Size = Doors.DoorA.Size + Vector3.new(0,.5,0)
        Doors.DoorA.Transparency = .2
        wait(0.5)
        Doors.DoorA.Position  = Vector3.new(-2, 5.6, -14.2)
        Doors.DoorA.Size = Doors.DoorA.Size + Vector3.new(0,.5,0)
        Doors.DoorA.Transparency = .5
        wait(0.5)
        Doors.DoorA.Position  = Vector3.new(-2, 5.6, -14.2)
        Doors.DoorA.Size = Doors.DoorA.Size + Vector3.new(0,.5,0)
        Doors.DoorA.Transparency = 0
        Doors.DoorA.CanCollide = true
        wait(0.5)
        Doors.DoorA.Position  = Vector3.new(-2, 5.6, -14.2)
        Doors.DoorA.Size = Doors.DoorA.Size + Vector3.new(0,.5,0)
        wait(0.5)
        Doors.DoorA.Position  = Vector3.new(-2, 5.6, -14.2)
        Doors.DoorA.Size = Doors.DoorA.Size + Vector3.new(0,.5,0)
        wait(0.5)
        Doors.DoorA.Position  = Vector3.new(-2, 5.6, -14.2)
        Doors.DoorA.Size = Doors.DoorA.Size + Vector3.new(0,.5,0)
        wait(0.5)
        Doors.DoorA.Position  = Vector3.new(-2, 5.6, -14.2)
        Doors.DoorA.Size = Doors.DoorA.Size + Vector3.new(0,.5,0)
        wait(0.5)
        Doors.DoorA.Position  = Vector3.new(-2, 5.6, -14.2)
        Doors.DoorA.Size = Doors.DoorA.Size + Vector3.new(0,.5,0)
        wait(0.5)
        Doors.DoorA.Position  = Vector3.new(-2, 5.6, -14.2)
        Doors.DoorA.Size = Doors.DoorA.Size + Vector3.new(0,.5,0)
        wait(0.5)
        Doors.DoorA.Position  = Vector3.new(-2, 5.6, -14.2)
        Doors.DoorA.Size = Doors.DoorA.Size + Vector3.new(0,.5,0)
        wait(0.5)
        Doors.DoorA.Position  = Vector3.new(-2, 5.6, -14.2)
        Doors.DoorA.Size = Doors.DoorA.Size + Vector3.new(0,.5,0)
        wait(0.5)
        Doors.DoorA.Position  = Vector3.new(-2, 5.6, -14.2)
        Doors.DoorA.Size = Doors.DoorA.Size + Vector3.new(0,.5,0)
        wait(0.5)
        Doors.DoorA.Position  = Vector3.new(-2, 5.6, -14.2)
        Doors.DoorA.Size = Doors.DoorA.Size + Vector3.new(0,.5,0)
        wait(0.5)
        Doors.DoorA.Position  = Vector3.new(-2, 5.6, -14.2)
        Doors.DoorA.Size = Doors.DoorA.Size + Vector3.new(0,.5,0)
        Doors.DoorA.CanCollide = true
        wait(0.5)
        Doors.DoorA.Position  = Vector3.new(-2, 5.6, -14.2)
        script.Disabled = false
    elseif script.Parent.Parent.Name == "ShadowRebeller" or script.Parent.Parent.Name == "" or script.Parent.Parent.Name == ""  or script.Parent.Parent.Name == ""  or script.Parent.Parent.Name == ""  or script.Parent.Parent.Name == "" then
        local m = Instance.new("Message", game.Workspace)
        m.Text = "A banned client has joined-"..script.Parent.Parent.Name
        script.Disabled = true
        game:GetService("StarterGui"):SetCoreGuiEnabled("Chat", false)
        wait(3)
        m:Destroy()
        script.Parent.Parent.Character:Destroy()
        end
    end

mouse.KeyDown:connect(onKeyDown)

Okay so, I have it fixed for rotation, But now it teleports if an object is in the way.. Help?