2004 adventurer 35u bedroom slide

[mdka99]

the bedroom slide just started to act up. Going out it seems to get hung up on something. the bottom keeps moving but you can see the top isn't keeping up.
if I reverse for a second and take the pressure off then it will go just fine. sometimes it does it in 2 places on the way out. I checked on top of the slide inside and nothing up there. I cant see much under the slide , its all covered up. it retracts smoothly. anybody got ideas?

[BobC]

If you completely remove the top off the bed and the plywood bottom of the under-bed storage you should be able to see a lot of the mechanism and hopefully can spot what's hanging up.