i got a 400ex a couple of weeks ago and started popping the clutch to do wheelies. it worked fine then i tryed to do one later and when i popped the clutch the front went up a little and then it bogged down . i was at 3/4 throttle and it would bog down for about a second then it would go. i can do pretty good wheelies in first gear without popping the clutch but i can only hold them out for like 3 seconds. any help with holding out the wheelies, and the bog problem. it runs great now but i havent popped the clutch to try and get the front up. any thing will help.