Another thought: As this is a hydraulically activated clutch, would there be any adjustment that would prevent starting? I notice one time trying to start it when it was in 1st gear, it tried to pull forward a little due to the new thicker clutch disc (my assumption). I just re installed the slave cylinder just like it came out but now with the fatter disc, could this be keeping it from starting? A sensor detecting clutch travel/clearance or lack there of?
Any input would be greatly appreciated

Scott