Carl, you wrote: "Loops are doable but rolls are scary with the ailerons limited to stock capability. If I cut them off and hinged them I think rolls would be easier."

I've seen a stock magister from a friend perform the rolls flawlessly. He, Alejandro, makes the rolls after getting the nose a bit up and he almost doesn't mess with the elevator or rudder while doing the roll. I can tell you that from ground his rolls look perfect. He loses almost no altitude, and keeps a very straight path. I hope that encourages you to.

I've had some very bad rolls while messing too much and too early with the elevator and rudder. I've also noticed that using 3/4 of the ailerons stick works best for rolls. But I share your point, My worst fear moments with the Magister have been doing rolls.

Javier