I overheated my Stage 4 which caused the disk to become one with the pressure plate. Sent it back to SBC and they warrantyed it for a Stage 5. They received it on a Thursday afternoon and had it back in the mail by Friday. No issues. Both clutches are Modular on a 50 trim + SCT flashed + bolt-on car w/ slicks.
Great customer service
Jon @ SBC FTW.
edit: My next clutch after this Stage 5 6-puck will be the SBC Race Series Stage 3.