Problem solved. I went under the coach today and my arms, shirt, face, arms, etc cleaned the bottom of the coach.
There are 2 holes in the solenoid and one stud on the frame to hold the solenoid. Apparently, when the coach was built it was installed in the first hole. I moved the solenoid and used the rearward hole to attach it to the frame which gave me about 2.5" of additional space. It would behove all Knight, Ambassador, Diplomat and Endeavor owners to make sure the air hose has enough slack. Before the solenoid move there was no slack and susceptible to breaking thus causing loss of exhaust brake and possibly main brakes. Not too good of a situation.
Dawn and Mark
06 HR Endeavor 40 PET