
The picture on my WVO post shows the rubber lug on top of the strap. I just placed a hockey puck underneath the lug in the picture, for a snug fit, after shaving it down a bit on the table saw.
Keep thinking you could drop your exiting exhaust system, take it to a muffler shop and have them re-route the pipe from the exhaust 'somewhere'. Or maybe try a 2x4 jig and some careful tapping?!
Now get camping!