As Rob suggested, changing the flywheel step could potentially help. Or switching to Isuzu slave cylinder (longer throw).

Switching to a South Bend pressure plate should work in most cases, but not all. Some people still have had issues. If you want to stick with the South Bend products, then Tim Zimmer @ tmzperformance.com would be the best person to talk with. He has intimate knowledge of all the potential issues and solutions regarding these clutches in DSMs and has been working closely with South Bend.

I got most my info from the ECMLink forums. Not sure if you have access, but here's a link: http://www.dsmlink.com/forums/showthread.php?t=60281

I chose to go with a ACT disk since I already had possession of a brand new one.