NEED HELP ASAP with 400ex carb overflow gas leaking

[yamablaster24]

OK im really getting mad, i just bought new floats, float valve, cleaned everything out spotless, cleaned all jets and everything. When i first got my ex used it kept leaking right after you start it and leaks unless your WOT. PLease help i replaced just about everything and no luck. Im going to NEMX practice at 7 in the morning. I need help ASAP

[bulkdriverlp]

i know it sounds stupid but check your float bowl drain screw, theres a black hose that goes down in your frame, when you loosen he screw (right at the bottom of float bowl) it drains it for you, so you dont spill gas all over. i dunno man

[jiggaman2401]

yup check the o-ring on that screw when you got it out lube it up a little if ya need it and put it back in..

[standardryder]

i just re-jetted my 300ex and it does the same thing. only when i stop real quick or excelerate.