Replaced the tank this evening as I had a small leak on the frame rail side due to rust. Took less than 5 minutes to remove, but installing the new one was a few hours of cussing and taking a break to watch some soccer, followed by more cussing. Reattaching the airline connection is a huge pain, and can only be done with the tank not attached, then kinking the line while attaching the tank. I'm amazed I don't have any leaks at this point, but all is good now.

Time for a beer...