I have a full set that i haven't used. You need to file the fingers to fit.
I am currently using the brass sintered set and have no problem with slip or drag.
Most issues are the cam section of the actuator (they fail, ala cd7 photo in VMX for me).
But have also seen, while sorting clutch out, that the bearings (which u can't get as they are some special number - but i do believe brad has found a polaris bearing that is the same now) allow too much movement sideways when you pull the lever as they are wornout, hence you lose some of the stroke to push the pressure plate clear.
I had a box full of used ones and used to sift through trying to find the best of a bad bunch.