Anyone know why 1st now sounds like reverse after dumping new clutch at 5k. Old one always slipped at full bore launch, so I can only assume torque of VF28, sport cat H & S system, panel filter, GReddy profec 2, on '01 wrx has buggered up bearing / synchro? Can I rebuild / uprate box guts or is it sti box replacement time to prevent repeat?