I've personally looked at some of Paul Walker's planes. His controls are very slow, allowing a wide handle spacing. Leadouts travel A LOT. I am somewhat surprised that his elevators move as much as they do, but as you have found out already, you really can't use all of that, except in dire emergency situations. At least, that will slow down the plane and result in it hitting the ground at a lower speed. That would be a good thing if you were to have a line break, I suppose.
I haven't questioned Paul on the reasoning, but when he flew my plane (last Spring?), he was a bit apprehensive about how little the elevators moved. But he said it flew ok, and didn't suggest any trim changes (which is unusual). Yeah, he flew it a lot better than I can. Paul is 11 time NATS Open winner, a past World Champ, and has many high placings at the WC. Hopefully, he'll become a repeat Champion in Perth this month!
Steve