Yeah... its on the back side. I can't see anything that it could hit, even slamming the stop. One of those mysteries.
Have a line on a couple of complete right tubes... lets see how that goes.
At least changing the O2 sensor made a differrence. Today, for the first time all winter, the exhaust was blowing a nice steam cloud. Cat is actually working, so things were lean enough.
'03 R1150GS Sport, Yellow - the Great Gonzo
'88 K75S, Red - Hellboy
'72 R75/5 Toaster, Blue - BluBawls