As you can see from my above post, I have issues with my 34.2!! My slide issue in part was caused by a missing roller. It appears Thor has added a third track and motor to the 34.2. If you look at the 2015 models, you will see the 3rd rail at the top.
Keep a close eye on those slide tracks, watch for signs of metal flakes and chips, gouges and unusual wear. If you spot anything unusual, have it checked out immediately!!!!!!!!
I have new issues that I'm dealing with, I've retained an attorney and I'm trying to resolve this situation!