Does the torque convertor lock up after the 3-4 shift or some other trannies lock between 3-4 . the reason i'm asking is my slush box just plan sucked. i installed a Bauman shift kit and drilled the plate for level 2 shifts and bumped the line pressure with the parts provided. i'm fairly happy with the 1-2, 2-3 they are solid with no slipping. then the next shift 3-4 or 3+lock up is slushy/slipping then the next shift 4th +lockup or 3-4 is rock solid. What i'm trying to determine is the problem with the lock up or the gear shift.
thanks

SV