Go to this thread
https://www.irv2.com/forums/f274/kit...ng-495000.html
And look at the photos in post 21. They are a view under the slide exterior (extended)
I had jacked the corner of the slide up and placed a Delrin sheet on the bottom of the slide above the roller and screwed it to the bottom of the slide.
The effect was to raise the slide 1/4" on that end. This can be done on either or both ends.
If you pull back the slide seal you can see the rollers are supported on one or several shims that appear to be scrap pieces of paneling. In my case they were crushed.
If you do this check the gap at the top (exterior) of your slide and make sure that whatever thickness of Delrin you use will not keep your slide from fully coming in.
Alternatively while jacked up you could replace or augment the shims under the roller but I couldn't figure out how to unbolt the rollers while the slide was in place.