Hey guys, finally completed the rebuild of my 1990 XR 100. I installed a BBR 120 kit as well. Cranked it up for the first time last night and after being apart for i hate to admit almost a year (worked on it off and on) it started up after the 3rd kick ! I still have a curious issue with idle which i had before the rebuild as well. The bike runs pretty well with the choke on and stays at a pretty consistent high idle. If you move the choke down 1 or two positions the idle drops but sometimes bogs down to the point of almost stalling. If you blip the throttle a bit it will bring the RPMs back up but seems to hang at a high idle. You can adjust the idle screw to a point where it will idle smoothly at each choke position but that doesnt make sense to have to do that. It doesnt necessarily always do this and is a bit inconsistent with how it behaves. Not sure if this is a carb issue or a timing issue or where to begin looking ! Any thoughts ??