[newell_0]

Sayed,  

Steve (rheavn) has written an excellent thread explaining the air system on Newell's and how to logically go about isolating the different branches to find air leaks.  I would strongly suggest you study those threads as they are the BEST info I know of on the common Newell air leak challenge.

Thanks, Richard!
I read the two links Steve provided. Indeed, the tools he has come up with for finding leaks seem very useful.
My BIG question is how do you find out the schematic for the air system in a Newell Coach?