Mike, On the right front bag I had to cut off the fitting and they are steel not brass, I used my M12 Milwaukee sawzall. They screwed them into the bag so tight that I could not get it to break loose. And of course you do not have any room to swing a 1 1/8" wrench, I even tried a socket and 1/2" drive ratchet and could not budge the fitting. On the right rear bag I cut a access window in the front of the basement compartment which made the process a bit easier. To remove the fitting I had to use a piece of pipe on the end of my long handled Snapon ratchet. These fittings were installed dry, no thread seal or anything.
After I got the bags out I ground out the fitting holes so the fitting would pass through.
I would strongly suggest that anybody that has a coach with the braid covered air lines perform a pressure test on all the hoses, and I would be willing to bet they will find a lot of leaking hoses. We tried braided hose on some of our trailers and went back to rubber because they started leaking after a couple of years.