So, just recently my bike has been dying on me when I tweek the throttle just the slightest bit, but sometimes it revs up just fine. This is when it's both cold and hot. I spoke with the yama dealer and he said it sounds like a prob with the needle and that I should drop it one notch. To be honest I've never fiddled with the needle since I got the bike and I've heard it can be a pain. I did a search and couldn't find anything on this forum. Is there anyone with some detailed experience who could guide me through adjusting the needle, so I dont get anymore frustrated!? I know its located in the top half of the carb'...and that's about it. I'm running a 160 main and 40 pilot at about 4700 feet, if that helps.