i know what you are saying and in the f 90 i cut back the firwall 9/16 and put in a saito 150 and have all the power i need but in the showtime there is no way to cut back the fire wall and a bigger engine will stick to far out of the cowl not to mention 9 + ounces of extra weight this situation is making me nuts! i think for sanity sake ill just get rid of the damb thing but i see from the desgn that it has so much potential and i allways wanted to have a pattern plane from hell and this looks like it fits the bill