well i have got quite a few hours of use out of my supertigre g-51, starts first flip and spinns a 12x4 at a respectible 13,500 rpm. i have noticed a leak in the front of the engine. the only thing i can think of is the bearing because that is the seal for the front end. its not a terrible leak, when it runs thier is a small drip about every 5 seconds or so and when i let it sit for a few hours i find a small puddle of fuel under the engine. nothing too bad, just a little annoying. my second questian is what i could do to the engine to maybe make it perform better. im running 10% fuel on a #8 plug. are thier any "aftermarket" parts i could put on it? or just any general tips or tricks to make it get a few more rpms would be appriciated. thanks for all your help in advance.