So, as a FW pilot with some aerobatic experience, you would have known that a level 45 deg AoB turn is 1.4g and a 60 deg AoB turn is 2g - with your 'super-smooth' roll in and roll out of the turns, how did you generate the extra power/lift on a 90 deg AoB turn - let alone the impossible task of doing that at 100 deg AoB?
But that's just it, those typical steep turn G's were never encountered turning onto base, the thing just kept sending itself downwind no matter what AOB I chose early on.