ok thats a relief! i got some self tapping screws and screwed them in with a washer and its mounted very tightly. seems to be very strong. The holes i drilled were JUST big enough to get it to screw in. Anyways....i got it all screwed in and screwed down now. just hooked up the throttle....seems to function correctly.....all servos are tuned correctly it appears...just have to hook up the engine with the fuel tank i believe...install the landing gear and i can begin breaking in the engine....how many tanks of gas do you reccomend for a good break in?