I own a 2000 YZF 426. I know it has a big bore kit but I don't know what size. Last weekend was 1st ride in a few months. Changed oil,spark plug and filter previously and rode only once and it ran amazing. Last ride however I dumped it a couple of times and it seemed to flood easily. Could kick it out before but now I had to wait 8-10 mins both times. It has sinced leaked gas from the lines coming out of the bottom of the bike.( over flow lines?) Don't know much about bikes! My gas is off and it is still leaking. Any suggestions would greatly be appreciated. Also, if someone knows the size of the big bore kit for my model I would love to know. I ride with two guys both on KTM EXC 520's I pull them on hills and keep up on the straights and I'm 6'4 300lbs. I will be looking to buy a new bike when mine finally kicks it. Would love some suggestions.