Changed gears ok or just like before? Anytime I've ever had clutch problems, I pulled the cover and inspected all the plates for heat spots, any irregularities, possible swelling of the friction material, etc... If you're gonna keep launching it hard, check on the Brock's clutch mod. I understand that it's perfect for the track and takes just a little getting used to on the street. I've seen high heat do that to a clutch and sometimes it's just a temporary problem, sometimes (after constant use/abuse) it requires a little wrench time. I've never seen a set of scorched clutches that did anything right, there was always a warning sign.
Again, I haven't had a lot of experience with this slipper system, but essentially, a clutch is a clutch.