Stuttered release on one of the motors

OK looking for community help. A little while back my motor for the top left anchor started making a clicking noise when releasing belt. Only when releasing, not when taking up belt. I took it apart, opened up some tolerances, inspected and lubed everything. After putting it back together it is no longer making the clicking noise, but it is still making a consistent stutter motion when letting out belt. I’m certainly taking it apart again, but wanted to see if anyone had any ideas.

Check the gearbox screws, some people have reported them coming loose.
Check the belt guard isn’t fouling the spool