Ihave a 99' YZ400FL< JUST DROPPED about $250.00 for my forks to be rebuilt and some what of a face lift. i live in Phoenix AZ so it's kinda hot to ride in the summer. so i figure what better time than to take it apart. right before i took it apart, i was out riding, i ran out of gas, so when i got to the gas station on my way home, i tried to start it. it started but any gas givven, it dies. took the carb to my local shop, they disassembled and cleaned throughout. i put it in plastic bag, and it sat inside for a month. i figured the problem was fixed, but when i reassembled my bike (2 months later) it is doing the same thing. so right now, it will start, and idle 100%. you can give some gas, but then dies, and sometimes backfires. i found today if you take off and get into high RPM's and cruise, it will run. but when you slow down, it dies. then trobled starting until cooled down. pleeease someone help.