As Dan recommended, I too would recommend finding a reputable RV service/repair center that does not sell rv's. Heartland will allow you to take your rig to any repair facility and just get pre-approval prior to getting any repairs done. A repair facility generally does not have the space or want your RV sitting in their lot, so they are generally way more efficient at scheduling work and getting it done quickly. Heartland is one of the only large manufacturers that I know of that allows this. Just make sure that before ANY work is done, you have the repair facility call Heartland Customer Service with the last 6 of your VIN, your name and give them the complaint, cause and correction for pre-approval.
Rod