All righty, the problem has been resolved. Thanks to all that lent their knowledge and experience.
I removed the header bolts (8 of them) first, then removed the single bolt under the middle of the bike holding up the mid-section of the exhaust and them took off the two rear-most bolts holding the canisters on the back of the bike. When I did this, the headers fell to the floor, no longer being supported in any way, as gravity will do. Apparently when they did, a hose came off the bottom of one of the PAIR tubes.
I swear to <insert your deity here> that I checked every possible connection , but I missed that. What took 6 hours to do, re-do and re-do 4 more times was fixed in 45 seconds by a competent mechanic (with obviously better eyesight than I have).
Thanks again everyone!!