So here's the problem. I start the 5 hundie, the usual brrrrrr, pop brr, bang, brrrr, nice idle. Give her a twist of the throttle and let go........ The revs she no drop down back to idle, instead the revs scream through the roof at which point I s**t my pants and press the kill switch. The throttle action is sweet, no sticky points keeping the throttle open, oh no, she snaps back nicely.
Any ideas?