"ncrowley".....You just never know what's going to go wrong on these coaches.
I think anytime you add an aftermarket product, you have to look at the consequences of the installation. As an example, I have the SMI Air Force One brake unit on my coach. They supply a ton of install parts, but not the one part I think they should, split tubing wire wrap. You have to add about 15' of airline from the brake system to the rear of the coach. There is no way I would run airlines for my brakes without shielding them where they pass thru and along the frame. It's cheap to buy the wire wrap and that's SMI's position, but sometimes you have to anticipate problems.
Glad you got it fixed and I'll bet you have much more confidence in your coach tires knowing that the valve stems are more secure and rid of the extensions. Don't worry about the tires the dealer installed. Keep the pressure up and you'll probably age them out before they ever give you any issues.