Mike H that may be the case, I wonder if it has to do with the motors. There are 300:1 and 500:1 motors. I know that PC changed motors on a rig and went to the 500:1 to try and overcome issues. That is how I ended up with a free 300:1 used but good motor. With the torque increase of the 500:1 the screws would be under considerable amount more strain before the hall effect sensors signal the controller, the motors have stopped. Its an easy identification, the 500:1 motors have a opaque cap and the 300:1 have a black cap. My motors on my 2552 are 300:1 and I haven't had any trim issues, and my PC is the first run of the new Lippert slide installation. Curious to know if faiello has a 500:1 motors... Just a thought, just curious to see what changes PC is making to the slide to improve its reliability. There have been some issues as seen on this forum. It seems that the larger the slide the more issues, 3100's seem to be leading the pack.
Very Respectfully
Lance