Adding the padding to the bottom to flatten the angle helped me with the tailbone (though the big thing was relieving pressure under my thighs), but these seats really weren't intended for 3-hour commutes. Not that it's just an ST thing, as a lot of car's seats seem to stare into the eyes of Medusa after a few hours, even non-sporty ones. (I really miss the seats in my 1990 Subaru Legacy as I drove cross country in a couple of days and the only thing that was sore were my eyes. I was also a good deal younger then, but the seats were definitely more comfortable.) I also don't like that the minimum seat height is still fairly high, which I guess is a Ford thing. At least I never had an issue with the seat back.Interestingly enough, I'm the same way with about the same height and weight. The ST1 seats really pinch my tailbone after awhile and I honestly think the Recaros would be more comfortable after sitting in them.