Yes, it runs fine on 15%. I think Ulf said the bigger ones need a couple of shims to run 15%. The instructions for the .25 say 15% is used for "Competition" flying, but they don't say you need anything extra like shims on the .25. I use whatever I have that day, usually 15%. But if I happen to be flying my ST 3000 that day, I'll use the 0% in the Irvine too. No problem whatsoever. It's not making the same power, but it's still plenty.

No, the ailerons are correct, you're thinking of Arkansas style. The ailerons are not clipped on the plans for the Taco, but after 3 times breaking them I just cut them off. I'll never build annother 3D plane w/o that mod. I wish I would have remembered that for the Sledge I'm finishing.[&o]