My son has a 2004 Honda CRF 50 and I noticed a while back that fuel was coming out of the overflow tube at the bottom of the carb. So, 2 days ago I took the carb apart and cleaned the float needle. The problem stopped and the bike didn't leak fuel at all for 2 days. I even left the fuel petcock in the on position for around an hour right after I cleaned it just to make sure it wasn't going to leak and it didn't leak a drop. Well today he was riding the bike and I noticed it was leaking fuel out of the tube again. Any ideas as to why it would be doing it again so quick?