Good quality parts for sure. Lippert has slide frame adjusting videos on YouTube where I learned how to properly adjust them. You may be able to visually match one up with yours. I updated my tank sensor system on the last Class A I had, the leveling system too, and YouTube was a wonderful resource to the "How To" to get the jobs done.

I went back and looked at your pictures and I'm pretty sure that is a Lippert Slide.