I think WildToad is right when he says to use CW. I have had independent shops repair/work on my RV but when I was on the road and the repair did not hold, I had to find another local shop and pay for another repair to the repair. I then used CW to do repair and installation on my RV and the work was professional and the price reasonable (a bit on the higher side though). BUT, if the repair or installation was incorrect or did not hold, I went to the nearest CW and the problem was corrected with no charge (except for new parts however I got credit for the original parts). As an example, I had work done on my Black Water valve in TX because it leaked. The new valve worked until I reached Las Vegas and then started leaking again. I took it into the local CW and they repaired the valve without charge. If I had taken it to an independent in TX, I would have had to pay a new repair bill in Las Vegas. I take my 3 cars to a local independent garage but when it comes to the RV, I take it to CW.