First and only wife, 40 years and counting, and I've only had my Nova 13.5 years. Mind you I did have a brief 2 year fling with another Nova back in...
I am sure it would be a lot of messing without a huge gain, jets would probably have to be changed just to change them back again for the new engine...
Phill, I've been looking through your thread again ... regardless of whether or not you get to the bottom of the problem before you start your strip...
Similar experience here too. Both Novas I have put through multiple MOTs had adjustable bias on braking via a bias bar. In fact on the first Nena MOT...