My Junker Drag Truck with the TV lever wired WOT and the line pressure hovering around 200 psi in the lower gears shifts good-n-firm!!!!!
The shifts feel smoother from 1/2 throttle on up because wheel spin soaks up the shock load of the gear shift.
It barks the tires on downshifts when coasting to a stop!!!!
I don't claim to be a transmission expert, but so far this one is holding up well to 1500+ ft lbs.
My daily driver is a little too firm on the engagement into reverse, other than that, it just firm enough to feel the shift but still smooth. Bang-hard shifts on a daily driver would suck!!!