It does sound like you need to have the slide adjusted and unless you have the tools and know how its a dealer job. If the unit is still under warranty you need to get it to a dealer that will fix it under warranty or pay the cost of an RV shop to adjust it.
Jake my sidekick (yellow Lab)
2017 RAM 2500 CC 4X4 Cummins Diesel
2016 Flagstaff 26 FKWS
AF&AM & El Korah Shrine of Idaho