Locking Up Stall

I have an 07' TBSS, several mods: Kooks LTH, catted Y, ADM efan, pulley, CAI, JBA catback, RPM LEVEL V tranny, Vig 3200...I have run a best of 12.83 @ 103. We are trying to get the converter to lock up at the bottom of 3rd in an effort to get a little extra MPH on the runs. The converter locks at 90+ mph...its so close to the traps it doesn't have much time to add mph. I'm an AWD so I know I can't expect to trap alot faster. Its more of an issue that we're telling it to lock the verter' at 81 mph and its still locking at 90+.

Am I missing something? How can I get it to lock at the bottom of 3rd circa 82-84 mph (depending upon shift RPM).