I added 3/4 of an inch to the rear of the elevators, for no apparent reason. The first flew great, but what the hey! My Rossi caused the plane to balance on the dot according to plans, but for my taste I did add 1 ounce tail lead. I'm going to use a ST 51 with an old U/C muffler that weighs 1/2 ounce. I'll lose about 3 ounces off the nose this way. I may also put a few 3/4 to 1 inch holes in the nose where the ply adds so much strength. I'll use a covering job like the box with Ultracote (one color basically) instead of the three color Century 21 fabric (fairly heavy) I had before. The plane is a blast to fly. When it got shot down I was a bit misty eyed (mostly for being pissed that the guy next to me on the line shot me down and I had the freq pin). He bought the plane. Within a week I had the new kit and was planning what to do. I just haven't focused on it until now. Frame up time is like it's an ARF. Covering couldn't be easier. I had dual rates. Low rate was the suggested #s then I added throw until it scared me a bit. High rate was lock to lock on everything. Close to 70 degrees on elevator acted like an airbrake so I backed it to around 55 or so. I did find an 8 ounce Sullivan "oval" tank that was fun because flight times were doubled. The tank was flat and long so it was close to the CG and had fairly little effect on flight. With green or pink fuel there was no reason to land for fuel checks. Just harrier on by and take a look. Then do a rudder turn around and go back. Full throttle up and snap, snap, snap. Tailslide down to 10 feet. Go level pull up into a 20 foot high stall turn then... Well you get the picture. I sware I could fly it in a high school gym no problem. Flapperons are cool, but the plane is pretty light on the wing anyway. Knife edge needed some programing to eliminate coupling, but not the worst. I hope to keep this one around a bit longer than the first. Go for it, you won't regret it.