The SS likes a CG of 4 1/4 in back of the leading edge...+ or - 1/4 in. If your close...nose heavy is better. Also the SS will climb at full thrittle. It needs a 3 deg. right, 3 deg. down on the thrust line of the motor. I used a square piece of hard wood & filed it down for the 3 by 3 and liked it better...Especialy after I went brushless....The SS is one of the most modified planes out there. Do a search while waiting for your gearbox.

PHIL I.