I recently purchased a 2005 Honda 400ex. The overflow tubes from the carb leaked gas and it wouldn’t idle well. The guy told me it just needed to carb cleaned. I cleaned the carb, cleaned the idle jet which was plugged, and re-assembled it. It fired right up without the choke and idled well. I rode it for a couple minutes but never past 2nd gear. The next morning the air box was completely full of gas, the carb was full, and some was in the motor. I took everything off and tipped it back to drain what i could out of the motor. I haven’t done anything since. Any suggestions as to what I should do? do I need to rebuild the carb? Take it to dealer and have them fix it? Any help appreciated, thanks.