Why does aim script phase in and out of changing the FOV?

Hi! I made an aim script for a raycast gun and for some unknown reason it randomly will phase in and out of aiming and sometimes not aim at all on certain guns. Some tools work, some don't.

Here is the localscript that handles all of it. (Mousebutton2 Up/Down and the while true are the important ones)

local aiming = false
local cc = game.Workspace.CurrentCamera
function Equip(mouse)
    local Player = game.Players.LocalPlayer
    local AmmoGui = script.Parent.AmmoGUI:Clone()
    idleAnim = script.Parent.Parent.Humanoid:LoadAnimation(script.Parent.Idle)
    fireAnim = script.Parent.Parent.Humanoid:LoadAnimation(script.Parent.Fire)
    AmmoGui.Parent = Player.PlayerGui
    AmmoGui.TextLabel1.LocalScript.Disabled = false
    AmmoGui.TextLabel2.LocalScript.Disabled = false
    mouse.Icon = "rbxasset://textures/GunCursor.png"
    idleAnim:Play()
    mouse.Button1Down:connect(function()
        print("Mouse pressed client!")
        if script.Parent.Ammo.Value > 0 and script.Parent.IsReloading.Value == false and script.Parent.IsFiring.Value == false then

            script.Parent.RemoteEvent:FireServer(mouse.Hit)
            fireAnim:Play()
        end
    end)

    mouse.Button2Down:connect(function()
        print("Mouse pressed client!")

--      if (cc.focus.p - cc.CoordinateFrame.p).magnitude <= 1 then
--
--          print("First person")
--          repeat
--          cc.FieldOfView = 20
--          wait(0.33)
--          until (cc.focus.p - cc.CoordinateFrame.p).magnitude > 1 or aiming == false
--      end
        aiming = true

    end)
    mouse.Button2Up:connect(function()
        print("Mouse pressed client!")
        aiming = false

    end)


end
function UnEquip(mouse)
    wait(0.5)
    local Player = game.Players.LocalPlayer
    Player.PlayerGui.AmmoGUI:Destroy()
    local cc = game.Workspace.CurrentCamera
    cc.FieldOfView = 80
    aiming = false
    idleAnim:Stop()
    fireAnim:Stop()

end
script.Parent.Unequipped:Connect(UnEquip)
script.Parent.Equipped:Connect(Equip)
while true do
    wait(0.33)
    if (cc.focus.p - cc.CoordinateFrame.p).magnitude <= 1 then
--
        if aiming == true then

            cc.FieldOfView = 20

        else
            cc.FieldOfView = 80
        end
    else
        cc.FieldOfView = 80
    end
end