Can anyone help me out? I just got a scooter for my little brother. After tweaking the regulator a little, I got him about 4 or 5 mph. Well, since the scooter has been sitting for a while, we figured we'd drain the nasty gas that's in there and put some new gas in it. Well, what we thought was a drain plug, was actually the bottom screw on the regulator, which is a Fuel Bowl Drain Screw. I don't know what's wrong, but I'm guessing fuel mixture. Can someone please help me out?!? My little brother is bummed out because it no longer works.