I did mine kast year - I actually put some weights on it early on when not driving to speed up. Has come down a little but still higher. You can alway trim the support pans underneath. I also heard others shave some foam off new seats.
I removed the seat pans (humps) from the floorboards, cut an inch and a 1/4 out of them and rewelded them back in. I am 6'3" tall so it was the only way for me to be able to drive the car after I did the TMI sport seat upholstery and foam. I have plenty of leg room between the steering wheel and the seat now.