Originally Posted by codyace

You did clean off the pressure plate before install and make sure the flywheel was clean/good too right? Technically you're supposed to resurface them, but I can tell you from first hand experience that that doesn't always happen, and cars drive just fine for years on the same flywheel surface (again, so long as it looks good)

If you got a really cheap kit, it could just be a weak pressure plate too. It does happen. Heck even with good kits you get a bad egg once in a while.