RayCasting problem, can anyone help?

I am writing a script to calculate a grounded point to spawn an object on, every time the function calls it prints my defaulting statements, and gets some ridiculous Y value, take a look below and please respond if you can help:

local DoNotIgnore = {"Terrain", "BaseTerrain"}; --[ A table containing the string names of whatever I want the ray to intersect. ]
local Ignore = {game.Players, game.Workspace.CurrentCamera};

function CalcPos(Initial)
    local StartPos = Vector3.new(Initial.X, 2048, Initial.Z)
    local function RayCheck(Start, Dir, Table)
        local NewRay = Ray.new(Start, (Dir - Start).unit * 999)
        local Hit, Pos = game.Workspace:FindPartOnRayWithIgnoreList(NewRay, Table, false, true)
        print(Initial.X ..", ".. Pos.Y ..", ".. Initial.Z ..", ".. (Hit ~= nil and Hit.Name or "No Collision."))
        if Hit ~= nil then
            for N = 1, #DoNotIgnore do
                if Hit.Name ~= DoNotIgnore[N] then
                    table.insert(Table, Hit)
                    return RayCheck(Pos, Dir, Ignore)
                else
                    return Hit, Pos
                end
            end
        end
    end
    local Hit, Pos = RayCheck(StartPos, Vector3.new(StartPos.X, StartPos.Y - 1, StartPos.Z), Ignore)
    if Pos then
        print("Found: ".. Initial.X ..", ".. Pos.Y ..", ".. Initial.Z)
        return Vector3.new(Initial.X, Pos.Y, Initial.Z)
    else
        print("Pos not found, defaulting...")
        return Vector3.new(Initial.X, 0, Initial.Z)
    end
end

delay(10, CalcPos(Vector3.new(0, 0, 0)))

Again, please respond if you can, any insight to solving this problem will be greatly appreciated.