I switched to a Mikuni TM33 carb from White Bros. a few weeks ago.Today was one of the first nice days to ride so it was my testing day. I've ridden it a few times down the alley behind my house, but haven't been on the trails. It's been fairly had to start since I changed the carb, but I wasn't concerned. Today before I put my riding gear on I ran it for about five minutes up and down a gravel road. I thought that it was running good so I shut it off to put my gear on. When I tried to start it again about 15 minutes later it wouldn't start. I tried for an hour and finally loaded it up and headed home. A couple of times it would sputter for a few seconds with the choke on, but would die quick. I've messed with the pilot screw (?) on the bottom side of the carb a little, but no luck. I know very little about carbs. Before I take it apart tonight and see if there's anything plugged or the float is stuck, anybody have any advice? The valves have the right clearance and the bike has the free mods with a White Bros. e series exhaust and a UNI filter. It had those mods with the CVK and ran fine. Thanks for any and all advice.