Hate to bud in on this, but my question is similar. I am preparing the Yellow F18 twin for it first flight and wondering if I should use flaperons as well. The previous owner had set it up with flaperons , once the flaps came down to 30 degrees. This plane right now is setup with tailerons, ailerons and flaps. It is powered by a P160 and weighs around 40 lbs.

Sung