does anyone got anything to say about the (21brpro)buggy pro? this motor has caused me grief for awhile now....i burned a hole through the piston(leaned out after running "good"??)...... rebuilt it..going for round 2...who knows this engine makes me feel like im brand new at this game??? sombody want to tell me a trick....plug??? fuel??? temp??? anything??? when this thing runs good (once in awhile)i got to hand it to em its fricken fast!!!..