I have had a problem with the RPM at Idle, reving too high. I had been able to adjust the throttle to compensate but recently it got worse, to the point of idling at 2000+ rpm. Bit had engine braking down grassy hill sides!

On a recent ride the other day, I got home and heard a hissing noise coming from under the tank. On investigation I found that the Rubber flange had been knocked off the Inlet stub and split. This must have happened when the bike had it's accident, but I hadn't noticed it way up under there.

So after removing the tank, I was able to glue it back together as a temporary fix, but I have ordered a replacement to swap out later.

While I was under there I checked the tappets, which were a bit too open, so adjusted them.
[IMG] Engine tune up by DARREN MORRIS, on Flickr[/IMG]

Not looking forward to having to take the tank off again but at least it will fix the problem long term. The engine is running much better now.