It may be that a great pack has jumped out of sync. I would count the teeth to see if they are the same could it be that your rotten floor has allot the slide box to be twisted out of square might be something to measure and verify.
Jake my sidekick (yellow Lab) 10/04 - 05/20
2017 RAM 2500 CC 4X4 Cummins Diesel
2016 Flagstaff 26 FKWS
AF&AM & El Korah Shrine of Idaho