You need the correct bearing as the sleeve is a lot bigger, you have most likely worn your syncros as the clutch wouldn't have ever been releasing properly, I tried an Orc with stock bearing and took it straight out after a test run, I can guarantee with the correct release bearing you will see the difference, it will make it very easy to drive, almost like stock clutch feel. There is a reason these clutches come with a different release bearing when you buy new.