Eddie, could hard starting also be due to a too rich leak jet? I have put some stage 2 hotcams in my yz. It is way harder to start and when I wack the throttle I get a small blue puff telling me it is rich. The stock was 80 leak and I went to 40 and it ran great with the stock cams, but not so good with the hotcams. Air screw is about 2 turns out. Now when I start it cold, I have to start it with the choke off and hot start not pulled. That is the only way it will start cold right now.\ It starts about 4 kicks hot and hot start pulled. It used to start 1st kick before the hotcams mod. I know that Im running rich for sure but is it the pilot or the leak I wonder. I have an 07 bike with aluminum frame which is the harder to get to the carb, so the less I have to go in there the better. I do have a (60 leak) and a smaller pilot jet. Should I just change them both while I'm in there? I'm also runnning a full 4.1 and powerbomb pipe. The throttle responce is great with the o-ring mod as well. Thanks for any help.