Thanks for the response...one question that wasn't answered....whats the purpose of downward thrust? And on the subject of right hand thrust, can you compensate for this by a bit of rudder trim? The reason I ask is this.......the fella that built this plane read the instructions, which were wrong, and put in LH thrust. I reworked the engine mount to correct this and I'd guess by eye that my RH thrust is pretty minimal. If I stare at it long enough, I'd guess 1 degree. Given that my flying experience is nil, I'd like to minimize any problems BEFORE I push the throttle forward. It was pretty easy to lay out the proper RH thrust, but it was a bit more tricky using my dremel to cut the hole. Hard to keep that blade going straight...and unfortunately once you cut the hole, you can't just hog it out more as it you lose the wood needed for the screw holes. thanks, Guys