[Tfrazier]

I will try to answer the questions and be more descriptive. Also included a picture of the AD 9 setup with colored arrows and a description of how it is plumbed.
1. @ Chris: The black 1/4" hose in the picture of the original set up was a little hard to follow. It went directly from the governor to the unloader port on the breakmaster (kind of hard to see the termination on the breakmaster as it is at bottom on the back side). Hopefully you can follow the route easier in the AD 9 set up picture. It goes from the governor to the control port on the AD 9. The hose is a bit longer than it needs to be but I didn't feel like cutting it down.

2. @Chris and Richard: No Leaks. Confirmed that there is no air coming out of the bottom of the air dryer. I could only check this with the engine running as I could not get the 110 compressor to come on (further explained in number 3.)

3. @ Richard: Blue 3/8" airline that terminates at the T, between the braided hose coming from the engine compressor and Supply port. I have not verified that it is coming from the 110 compressor. Believe it or not, I can't figure out how to turn on the 110. I normally leave the switch in the on position and comes on automatically when I am in level mode, and the system needs a little more air added. Doesn't happen very often but I have never had the need to turn it on manually. Just my luck.

4. Control lines reversed: I don't think so. I pretty much replicated the set up that was on the Breakmaster. the Delivery port on the AD 9 is at the bottom instead of the top like on the Breakmaster. Also, the first time I tested it yesterday, everything functioned as it should. I started out with no air pressure and the pressure built up to 130 psi and purged just like it has always done. I assume if the lines were reversed, it would not have done this.

5. Removed airline form engine compressor, cranked the engine, tons of air coming from the compressor - no doubt about it.

I also performed another experiment today. I wanted to see if I could repeat what happened yesterday. This morning, I let all of the air out of the system. Around lunch time, I started the coach and sure enough, it went from no air pressure to 130 and purged. I then shut it down and waited an hour. This time the brake and supply side were down to 110 psi. I started the engine, expecting the supply side to drop like it did yesterday. This time both gauges remained at 110 psi. No drop in pressure but no increase either. So I decided to wait another hour and repeat the process. This time both were down to 90 psi and neither changed when I started the coach. So the last time I check them gauges was at 7:30pm ((9.5 hours from when I did it the first time this morning). Both gauges down to 70 psi, but again, neither moved when I cranked it up.

I going to have another look at the gauges in the morning and see where it stands after 24 hours.