The main problem that most run into is the 4 bolts that hold the motor in place, they work there way out. We went to a NW Country Coach rally last year and out of 12 coaches 4 had bolts out laying in the bay or you could turn them by hand, remove one at a time and added blue loctite to the threads. Also use a vacuum to keep the drop down track clean and to spray something like this on the plastic to help it move on the way in, because that is when it takes the most torque on the gear box-shear pins and the most voltage to start up the drop down in the slide.
http://www.walmart.com/ip/Max-Pro-He...icant/24358860
I ordered 4 extra shear pins from Kevin Waite, hope I never have to use them but on the road you never know someone may need one.
2 stroker