Part not rotating past 90 degrees on Y-Axis (again)

Help and Feedback Scripting Support
#1

I previously made the same topic and it worked for a while. Now it stopped working again. :sob:
I know it is an issue with Roblox trying to normalize Rotation, but I don’t know how to fix it or work around it.

My script:

-- // Settings \\ --

local speed = 5

-- // Code \\ --

local RunService = game:GetService("RunService")

local part = script.Parent

RunService.Stepped:Connect(function(t, dt)
	local rotation = part.Rotation
	local newCFrame = CFrame.new(part.Position)
	part:PivotTo(newCFrame *
		CFrame.fromAxisAngle(Vector3.yAxis, math.rad(rotation.Y + speed))
	)
end)