Hello, purchased 2018 22RBK back in March, love the trailer. Noticed rear exterior wall not bonded to insulation, took to local dealer I purchased from and service writer informed me this is normal, industry standard where rear wall is just slid down over insulation. Will this have any long term effects where outer piece will bow out. I've checked some 2019 on lot, and they are the same. I'm a little concerned on the long term effects of external wall just hanging back there.