Issue with tweenservice

[KyrtapDev (Kyrtap)]

Im trying to rotate a part of model while rotating whole model but when tweening part i cant tween model

Code:

local TweenService = game:GetService("TweenService")
local info = TweenInfo.new(5)

local Model = script.Parent
local part1 = script.Parent.Part
local part2 = script.Parent.p

function convertToAngles(vector)
	return CFrame.Angles(math.rad(vector.X),math.rad(vector.Y),math.rad(vector.Z))
end

function tweenModel()
	spawn(function()
		Model.TweenValue.Value = Model.PrimaryPart.CFrame
		local end_cframe = Model.PrimaryPart.CFrame * convertToAngles(Vector3.new(0,80,0))
		local Tween = TweenService:Create(Model.TweenValue, info, {Value=end_cframe})

		Tween:Play()

		Model.TweenValue.Changed:Connect(function()
			Model:PivotTo(Model.TweenValue.Value)
		end)
	end)
end

while wait(5) do
	TweenService:Create(part1, info, {CFrame=part1.CFrame*CFrame.Angles(0,0,math.rad(45))}):Play()
	tweenModel()
	wait(5)
	TweenService:Create(part1, info, {CFrame=part1.CFrame*CFrame.Angles(0,0,math.rad(-45))}):Play()
	tweenModel()
end

can someone help me fix this?

[aquaisaquafina (Aqua)]

If you want what I think, then you should use wield constraints so that moving one part moves all of the model.

[KyrtapDev (Kyrtap)]

but when im using welds then i cant tween welded parts

[Wigglyaa]

It looks like the tweens are conflicting as both require changing the CFrame. If you split it to alter Position and Orientation separately it might work.