Reversing the flaps and adding more tip weight would probably come pretty close to fixing the wild rolling to the outside on corners. That was a way to increase line tension back in the 50's and was taken to the max by Bob
when he introduced the differential flaps on the Thunderbird II.
And I'm sure many of remember that Tom Dixon had the differential flaps REVERSED on his last T-Bird. He flw that one real nice!
Does anyone sometime get the feeling we often deal with something akin to paralysis by analysis
when we deal with our airplanes???