Hi Luv3camp...My 2013 Bayhill is on its third fresh water tank. The first tank simply fell out of its restraints within a month of ownership. The angle iron frame was woefully thin and the restraining strap(s) were not correctly installed at the factory. The second tank was installed incorrectly at a disreputable dealership in Turlock, California. The second tank deformed rapidly as a result. A subsequent third tank was installed correctly and the frame was reinforced.
Slide-outs have been an ongoing and thorny issue on Evergreen/Lifestyle 5th wheels. Every slide-out on my Bayhill has been reworked and revamped several times, all under warranty or extended warranty. Last spring, I met an RVer in Arizona who had a gorgeous 2015 Alpha Gold and his only complaint was with the garage storage for his motorcycle. He could not get his motorcycle out of the RV because the winch system had quit working. Most likely your slide-out is a Lippert mechanism. Lippert is quite responsive to issues like you've described and would probably have a dealership network that could resolve your difficulties.
Best of luck...Ken
Ken & Lucy
2007 GMC 2500HD long bed Duramax/Allison
2017 Cedar Creek Hathaway Edition