Tweens look shakier after every tween?

So I'm scripting a throwing knife, that tweens to the position of an invisible ball at the position of your mouse. It's hard to explain, but the throw tween looks perfect in the first couple of uses, and afterwards starts to shake as it travels through the air. It gets worse and worse after every throw, and I'm not sure why. Anyways, here's the script. Any advice or tips are appreciated

	throwEvent.OnServerEvent:connect(function(player, Data)
		if tool.Parent.Name ~= "Backpack" then
			canSwing = false
			local localGoal = CFrame.new(tool.Handle.CFrame.p, Data[1])
			if localGoal ~= currentGoal then
			local ray = Ray.new(tool.Handle.CFrame.p, (Data[1] - tool.Handle.CFrame.p+ Vector3.new(0, 0, 0)) * 100)
			local hit, position = workspace:FindPartOnRayWithIgnoreList(ray, workspace:GetChildren())
			throwingKnife = tool.Blade:clone()
			throwingKnife.CFrame = throwingKnife.CFrame + throwingKnife.CFrame.lookVector
			throwingKnife.knifeOwner.Value = tool.Parent.Name
			throwingKnife.Parent = workspace
			local distance = (script.Parent.Blade.CFrame.p - position).magnitude
			local bullet = Instance.new("Part", workspace)
			bullet.Material = Enum.Material.SmoothPlastic
			bullet.BrickColor = BrickColor.new("White")
			bullet.CanCollide = false
			bullet.Anchored = true
			bullet.Transparency = 1
			bullet.Size = Vector3.new(0.3, 0.3, 0.3)
			bullet.CFrame = CFrame.new(script.Parent.Blade.CFrame.p, position) * CFrame.new(0, 0, -distance)
			bullet.Shape = "Ball"
---------------------------------------------------------------------------------------------------------------------------------------------------------------------
			local tweeningInformation = TweenInfo.new(distance/60, Enum.EasingStyle.Quad, Enum.EasingDirection.Out, 0, false,0)
	 throwingKnife.RotVelocity = -throwingKnife.CFrame.rightVector*15
	local partProperties = {
	Position = bullet.Position;
	}
	 
	Tween = TweenService:Create(throwingKnife,tweeningInformation,partProperties)
	
	currentTween = Tween
	currentGoal = localGoal
	
	Tween:Play()
	Tween.Completed:Connect(function()
		if currentTween == Tween then
			currentTween = nil
		end
	end)
	throwingKnife.ThrowScript.Disabled = false
---------------------------------------------------------------------------------------------------------------------------------------------------------------------
			tool.Handle.Throw:Play()
			--throwingKnife.Trail.Enabled = true
			--throwingKnife.ThrowScript.Disabled = false
			tool.Blade.Transparency = 1
			wait(1.2)
			tool.Blade.Transparency = 0	
			throwingKnife = nil
			canSwing = true
			end
		end
	end)