Musky - yes indeed. Just looked through my early pics of the project but can't find any of the mod. Although it's some time ago now, I don't recall taking any of the clutch mod. I can say it was relatively extensive, as it employs a new backplate and a narrow but large(ish) diameter ballrace. Basically I took a plunger clutch basket and riveted it into a belt pulley which, in turn, is attached to the ballrace/backplate by small allen screws.