With an engine about to pull the firewall out, [X(] you most likely will never stop it from some ballooning. In jet fightere there is a trim button on the stick, or there was in my day, some years ago. We had thin leather flight gloves. Three flights with some heavy maneuvering formation time and I had to have new gloves. My thumb worked rapidly, and my airplane was "trimmed" at all times from straight and level to maneuvering at 4 rolling Gs or straight 7G maneuvers. Aircraft structural limits were +4.9 rolling, +7.33 straight, and -3

With a strong 53 on a machine that is overpowered with an OS 40LA, I think you just may not be able to stop ballooning with significant top-end-.