I'm sure you did, but did u install the thrust washer (needle bearing washer) on the rack when installing the pressure plate/clutch springs/bolts & washers?

Thrust washer is on but you mentioning the spring length has me wandering about that.  I used the EBC springs that came with the kit.  Mabey the spring is too thick or too long and collapsing before the pressure plate releases the clutch pack fully?  The clutch cover has to come back off anyways so I'll do some measuring.