I got a really good deal on a 142f Kit at a local auction house which I believe is the generic Amazon kit and installed it on a Huffy Panama Jack cruiser. On the first ride, the clutch was slipping. I couldn’t take off from a stop on flat ground and the engine and bike never felt hooked up at any rpm. The throttle stop was removed, so I was getting full throttle. I drove it a couple miles and at least 1/8” was gone from the lining so I don’t think it was a spring extension issue. It was the 3 shoe clutch. I went ahead and bought a 4 shoe clutch with the spring and lining around the full circumference. It acted exactly the same except the lining had no wear on a similar length ride. The little engagement it does get seems to occur at the appropriate rpm. I weight around 300#, but I don’t think that is the issue as the engine rpm doesn’t bid down when under “load”, which I’d think it would if it was my weight. I took it back apart, scuffed the drum with sandpaper and cleaned the lining with brakeclean and that made no difference. The clutch has the light colored lining with a slightly scalloped texture. Any insight would be appreciated. Thanks.