i would have to dissagree about the motor being helpless. i've had mine (do not run it often since my TZ) for almost 2 years. after i threw the manual away and tuned it to smoke and sound it was very reliable. it uses 30% with a duratrax gold "cold" plug.

i admit the carb was ver tricky at first but once you get it within its sweet spot its like any other good engine to where you dont need to touch the needles anymore. i got so good with the carb that i put the card in my old sirio.

i'm not saying this is the motor to put you in the a-main cause its not but it does run (well mine does)