Moved the Jayco inside the garage to start some serious work. I thought the lifting mechanism only needed the cables adjusted but found more problems with rust, worn pulleys, and bent eye-bolts. Decided to totally remove the cables, eye-bolts, and pulleys and replace them and clean and paint all the other parts. I did all the work with the top down so I was working in a 28" headspace, a real pain in the butt climbing in and out of the short door section. I have to get the lifting system working as the first order of business in order to raise the roof to do all the interior work. It will probably take a few weeks to get all the hoist parts so I'll be starting to clean up the trailer frame and axle next. Lots of rust but no structural issues. There are telescoping stabilizers on all four corners and they are welded to the frame so that will be a real challenge to clean up.
Jayco fits perfectly in the garage and has plenty of room to raise the roof to full height after the hoisting mechanism is fixed.
Two of the eye-bolts in the 4 into 1 plate were stretched from overloading so new eye-bolts will be welded type.
I never really knew how the hoisting system worked until I dug into this one. The hoist cable goes into a square tube where it pulls on a square metal plug which pushes a flexible spring shaft up into the telescoping legs on each corner.