How to stop Tween Service from changing orientation?

I have this code I found on the DevForms, however when I execute the code the model goes into a random orientation rather than a straight tween.

local function tweenModel(model, CF)
	local CFrameValue = Instance.new("CFrameValue")
script.Parent.Cash.PrimaryPart = MainPart
	CFrameValue.Value = model:GetPrimaryPartCFrame()

	CFrameValue:GetPropertyChangedSignal("Value"):Connect(function()
		model:SetPrimaryPartCFrame(CFrameValue.Value)
	end)
	
	local tween = tweenService:Create(CFrameValue, info, {Value = CF})
	tween:Play()
	
	tween.Completed:Connect(function()
		CFrameValue:Destroy()
	end)
end

I execute the function with this:

		tweenModel(MainPart.Parent, CFrame.new(script.Parent.Main_.Position))

This is what happens

How can I fix the problem so it evenly tweens out properly?

CFrames also store orientation. If you only want to use the position, you use Vector3s, like this:

tweenModel(MainPart.Parent, Vector3.new(script.Parent.Main_.Position)