Couldn't say what slide manufacturer Winnebago uses, but most full extension slides are made pretty much the same.
When we bought our used Minnie Winnie (it was in the rental fleet of the dealer we bought it from) the only significant issues we found were some of the drawer and pantry slides. As an avid do-it-yourselfer I have worked with drawer slides before and found nearly all were poorly lubricated, slightly misaligned, loosely mounted, and one had many missing ball bearings.
After just an hour or two I had them working like new by re-mounting the loose ones with either longer screws or the old glue-a-toothpick-in-the-oversize-hole trick, partial disassembly and reassembly with adequate lubrication, realigned as necessary, and went to the hardware store to buy ball bearings to replace the missing ones.
If perchance someone doesn't know how to remove a drawer with full extension slides, pull the drawer out as far as it will go. At the joint where the track segment mounted on the drawer slides into the next segment, there should be a small plastic piece (usually black) protruding from the second segment. Pushing down or lifting up (seems to vary by manufacturer) that plastic piece should release the first slide from the second. Of course you have to do both sides at the same time. When working with both slides (left and right) simultaneously, those releases normally work opposite of each other. In other words push one down while lifting the other up.
After making the necessary repairs, reinstall the drawer by simply lining the slide sections up and pushing the drawer all the way in. Usually the only issue you may encounter may be one of the slide segments not lining up properly on one side. If that happens, simply pull that second segment out several inches (which gives it a little extra flexibility), then you can manually guide the segments together.
I hope that all made sense!
2016 Minnie Winnie 27Q on a 2015 Ford E450 chassis. Retired U.S. Air Force. Living in Anchorage, Alaska