If you can, Iโd lessen the tension. Donโt ask me how... I have the same issue on a bedroom slide and simply push on the top of the slide to get it fully extended. Will have it looked at next time it goes in for service.
Tom Wilds
Blythewood, SC
2016 Newmar Baystar Sport 3004
2015 Jeep Wrangler 2dr HT