http://www.camaro5.com/forums/showthread.php?t=34085
Add a separate resivoir. With this I change mine often...especially after drag racing. With as many times as i do it I'm sure it has already been flushed out. I probably need to start using DOT4.
It might be too late for your current clutch though. Upgrade to an LS9 clutch next time but they aren't cheap.