We purchased 2013 Thor Challenger DT in Feb, after several trips back to the dealer in Tampa, we finally were able to use the RV in May. The problems were with the slide outs, batteries, leveling jacks and surround sound bar. The dinette slide out had to have the roller plate replaced( the rollers kept slipping off and binding the slide out). The kitchen slide out had to have motor relays replaced. Both slideouts are working champion now
The leveling jacks work when they want to, I did find the trip switch tripped and now they appear to be working ok. Batteries went flat(lazy days replaced them at there expense), surround sound bar keeps falling out going down the road. Love the flood plan and with the problems worked out we feel we are gonna be happy with the RV. Looking forward to traveling with other members of this website and using the website and info from other owners to help keep us on the road