I had one NOS ford and one original. The passenger side appears to be in great condition. No visible teeth wear, rollers are in great condition. However, the grease used got hard. I have used solvent and freed them up for the most part.
I am curious if the assist spring in the regulator is prone to failure, or should I not be concerned and re-lubricate the regulator and re-install the ford unit.
Opinions/ experiences would be helpful. ( See photo below of gear)
-Keith