WOOOOO HOOOO!!!!! Don, what a blast. I scaled down the Gremloid just a bit to use a YS .45 for power and it flew fantastic. Here are the specs and I'll tell you about the flying. Span: 34" Length of fuselage: 32" front of firewall to back of fuselage Elevon cord: 3.75" Wing: Two layers of 4mm corrugated plastic siliconed together. I could not find anything thicker locally (red, looks awesome) CG: 13% mac (perfect) Thrust angle: 3deg down, 2deg right Gear: 19.5" from firewall Power: YS .45 side exhaust with muffler. Prop: APC 10x8 (perfect) Elevator up/down 1.5" (perfect) Aileron up/down 1" (WAY TOO MUCH) cut down to 3/4" with 50% expo Reflex: 3/8" up ant neutral (perfect) Weight w/o fuel 5.5 lbs no ballast (I was surprised) First flight, my taxi testing consisted of a run down wind to check ground tracking and then turned into the wind for takeoff. With the plane lined up on the runway I eased into the power. Everything tracked great so I poured on the coal. At about 150' of runway with the plane still glued to the pavement I pulled back. I guess I need a little more up angle on the ground. As soon as the nose lifted the plane leaped into the air. This is when I discovered the roll rate. I managed to keep things going straight and got it up to speed and altitude. I was able to hit the rate switch to calm things down but at 50% it was still way to sensitive. With my heart racing and thumbs shaking I marveled at the fact this thing was even in the air and flying so well. GAWD! is this thing fast. I don't know what the speed was but no sooner as I had finished a turn I was across the sky and turning again. I never got over 3/4 throttle. Rolls, holly shit !!! I gave it a little left stick to see how fast it would roll and by the time I could stop it had done two revolutions. Ok, calm down, now its time to think about landing. I did a couple of high passes to get a feel for it and set up or my approach. I made my base leg turn with power at 50%, lined up on the runway. Keeping the nose flat I pulled off a little power and let the tail settle a little. Glide was better than I expected. At about 30% power with the nose up it just floated in. I could have used a little higher nose angle and a bit more power as I ran out of air at about 6" off the ground but no problem it just plopped on the runway and me grinning from ear to ear. After a once over and some radio adjustment off we went again. At 60% expo the roll rate was a little soft in the middle but very stable. I'm not sure how much different the wing material I used is from what you have but I could actually see the wings flex as I took off the second time. Well on the forth or fifth time around, still at 75% power flutter struck. The plane rolled to the right and nosed down. The only thing I could do was pull the power off and watch it go straight in. My dad commented on how straight it went in. Thanks dad. It would appear that a clevis pulled out on the right elevon. I made a couple of mistakes. One, I did not re-enforce the plastic in-between the control horn. Two, I forgot to put the keepers on the clevises. Either the wing material crushed starting the flutter or flutter just pulled the clevis out. Total damage, one fuselage, engine mount, firewall, fuel tank, prop and spinner. I used ATV silicone to glue everything together and the only part of the forward fuselage left was the bottom glued to the wing. Good stuff. All in all I am very pleased with how well this thing actually flies. Thanks for all your impute. Well it's off to the garage to rebuild for next weekend.