neat. Nick K who had probably the fastest sachs I've ever known of was a big advocate of cooling the clutch fluid. I'm not convinced personally, but its worth a shot. Definitely getting the 7 piece is critical, anything to get more area.
For me, in my experience, the slipping occurred not when starting off the line, but rather at high RPM. At first with athena 80, blaster pipe on the 5 piece it'd run ok up to mayb 5-6k, and then the pipe would hit and it'd start spinning. It was always at high RPM and high power I had the slip and glaze issues. That's where I think the stiffer springs really helped and it also seemed to work better at taller gearing, very counterintuitively. maybe that is justa heat thing though?
I also played with about a billion different fluids and nothing consistently benefiting noticeably