Had the same problem on my 2015 Baystar, took it to factory authorized service center, couple times trying to get it fixed. Still had problem. Every time I closed slider had to use ladder to help guide metal weather guard over roller.(pain in the ass). Posted a couple months ago on IRV2, found out how to add tension, but was scared off of completing myself due to extreme danger to self. Took RV to a trusted RV repair guy, he wanted to replace torsion spring mechanisms but none were available. He adjusted the tension on the existing torsion mechanisms, problem solved.
Gripnrip, Richard & Charlotte. Baystar 3308, Toad 2015 Jeep Wrangler, RViBrake2