Ok. Yes it has Zerk fittings. however I don't think they are the culprit. I have been using TTs with ZERKs for more than 16 years with no problems. This axle was replaced 2 years ago because of a bad hub. the service guy told me it was best just to replace the axle, and as I was having them flipped, and they had to come off anyway. We did.
As per instructions I have always pumped grease into the hubs until grease appears around the center. I did the new ones the same way. One side of the new axle filled, and showed as soon as I started pumping. The other side did not. It took a long time to get grease to show. I just thought as it was new, it wasn't filled at the factory. As I look back. It more than likely had a bad seal from the factory. but since I didn't crawl under the Tt to look, and there was no grease on the cement under the TT. It got past me. And since it is now 2 years old. It is on me. I saw it as soon as I did crawl under the TT. Grease all over the back plate. So it will be done before we go again.
Yes the brakes worked great until the last trip we took this fall. They still worked, still stopped the TT. But just didn't feel right. so I'm taking it to M&M to have it done. This is not the same place that raised the TT.
M&M Trucking is owned, and operated by a friend of mine. He started it from scratch about 15 years ago. It is also a on call road service garage. He is also a camping buddy. The shop has a excellent reputation, and I have more than just a little trust in his work. Knowing him as I do. I know he is as honest as the day is long.