If you had a horstman wet clutch break inside it must have been in really poor condition to start with or you did something wrong with it. I’ve been using them forever and never had a problem when properly maintained. The 2 disk Steel Nytro (wet) is completely bullet proof for the 4 hole can or SRY pipe and I’ve been running one for years with no problems at all. People try to run cheap transmission fluid and go out several sessions without changing it then ignore the service intervals on key parts.
FAA certified jet engine and aircraft technician,
Nicholson Speedway class champion 2001,
Yamaha KT100 Service Center,
41 years karting experience