My advice to you would be the same as you are a competitive powerlifter. Squat the way you can squat the most weight, and focus secondary lifts to bring up the weak points you have targeted. Do some good mornings, some squat stance variations and other things to bring your hams and glutes up to par. Also remember it takes time when you change a stance to hit the numbers you did with the other one. At first it isnt natural, and takes time. No different than changing grips on the benchpress.
Best meet lifts: 1040squat, 730 bench, 730 deadlift
Best total: 1040-680-730=2450
"This is about strength, not getting a 10.0 form score from the Russian judge" Steve Shaw