A wekrs clutch is the way to go. It's based on the centax so basically it's a push tye clutch. Best upgrade to get. More contact and solid feel on take off and very tuneable for engagement points. Springs and disc compounds can give different wear rates and grip but for adjusting, it's the only way to go.
There's no need to open her up to change the springs and tune the clutch shoes by shaving material off. Also, once you shave a bit off a regular shoe, you're stuck with it. There's no turning back. With a sliding clutch, it's just a turn of an adjustment. No need to take it apart.