We went from a 30 foot Monaco gasser to a Berk 34qs. The handling and smooth ride is not even close to the rough ride on the Ford chassis. We left our Berk stock. It didn't seem to need any suspension tweaks. Our type 2 Gerard water heater actually also works fine. The only issue we had was with the Swintek slide system. Although works well now. You should be pleased with the XL.
We have a 2018 Berk XL40B. We had the Safe T Plus installed as well, probably has as much to do with length as anything. Love our Truma Aqua Go WH. That swintek slide takes gettin used to after having all Hyd on our previous one.
__________________ Drivin, Miss Daisey & the boss, Toppi
2018 Berkshire XL40B-380, SFE=244
We have a Berkshire 390RB we added the additional stabilizer, we also added (I put in basement sliding trays) and we did a Cornerstone extended warranty that covers the entire coach up to 75000 miles. We had numerous issues with the Giraud first generation tankless water heater that cornerstone kept replacing. I finally contacted Giraud directly and they sent us the new generation heater with a programmable control to control the water temps...makes it easy to change temps between tasks.
We love our Berkshire. Good luck