Be sure the "anti-billow" lock is not locked! The spring in the anti-billow lock was weak in one of my slide toppers and the lock was locked when I tried to put the slide out. It bent the support arm on the slide topper!
I just had to bend the leaf spring with needle-nose pliers to solve the problem. Hope yours is that simple!
MERRY CHRISTMAS & HAPPY NEW YEAR!
Joe & Annette
Sometimes I sits and thinks, sometimes I just sits.....
2002 Monaco Windsor 40PBT, 2013 Honda CRV AWD