Hi Dave, me again.
We had that clutch in my bike originally but found it to slip. We put extra washers in to increase the tension on the springs but it then started slipping again so we tried to fit another washer in and ended up putting too much tension on and broke the clutch basket. So we ended up borrowing a clutch from Skids at Snetterton last year to get us through the meeting.
In the end we fitted an older non-slipper clutch and all was good.
Andy