Thanks both Tauno and ktbr.

Second question. After we returned home, I swapped the KX155's returning
them to the original slots. #1 KX155 (the wet one) didn't give us any
pitching problem with the auto pilot, however, thinking of coax, conection,
or antenna problems, we had a local tower operator complain about very
staticy transmisions. Reception was fine, Nav functions were fine.

#2 transmitted much better however only #1 is coupled so we couldn't check
the #2 radio/tray/coax/antenna against the autopilot.

Next step to swap coax antenna leads?

Thanks again,
Jim