The one peice of advice I have to give beside the above advice is to take your time and be patient.. The St engines LOVE a long break in.. I "Taxied" a gallon through mine before she ever flew(ST G51)... Run them ALOT before you try to lean them out and I promise it'll give you great performance! Mine turns an APC 11x6 at 14,010 RPMS! Also it has sat without being turn over for 4 months and canked right up the first time!. The Only time Its EVER Flamed out on me was when it ate a june bug and even then after we sucked it out it fired right up.. Also Mine runs 44 minutes on an 8 ounce tank of fuel. I Just bought #2 an ST G2300!