Just spent 11 hours fixing my slide on my Ace 30.2(full wall slide). I had a rv repair shop fix the front rails because it had skipped a tooth or 2. He had it for almost 3 months. He said the back rails where fine and it did work. Went camping 1 time and when I got home I pushed the slide out and about 3/4 of the way out it popped and skipped a tooth. Rail was destroyed. Ordered new back rails and bearing block ( not sure why they call them bearing blocks because there is no bearings in it). Luckily my dad and brother are both machinest we ended up putting a brass bearing in the lower bearing block works great. [ATTACH
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