I pulled 2 springs on a fairly new Barnett pack and loved the reduced effort. (I commuted 120 miles a day, 60 miles each way, including 17 miles on the Washington Beltway Blade, which is about as bad as it gets anywhere in the COUNTRY, let alone Stanford. No offense! Some days it took me over 2 hours to get home, and no, I don't want a Burgman. )

However, like Strati, I did notice some slipping at higher RPMs, and I'm hardly the most aggressive rider here. It seems to me that a better way would be to put some kind of spacers, like thick washers, between the pressure plate and the posts on the basket on all 6 cap screws that fasten them together. Maybe 2-3mm. This would effectively reduce the spring pressure uniformly around the plate... I haven't tried it, and there may be interference issues w/ the clutch cover, but might be worth a try.