Been wondering what makes for repeated shear pin breakage.
In our case, don't see any unusual binding in how the slide works. But the motor is very powerful and obviously doing a lot of work.
First thought we were doing too much stop-start, as we never had a slide before and were very cautious opening and closing it.
But now I think it's when the slide's welded-on stops hit the frame. The motor is so dam powerful, last time it not only popped the shear bolt (3rd one, grade 5), it busted off the welded-on stop (just a spot weld).
Now I'm extra careful. Just allowing the rubber gaskets around the slide opening to squeeze slightly before releasing the button. That leaves the remaining stop about 1/2" from the frame. The busted-off stop I'll just leave off and be careful;).