I have an 850 with sureflex plates and a belt drive, so run dry. I also run with a Venhill 'featherlight' clutch cable and an RGM clutch pushrod seal.
My clutch is ONE FINGER operation with no drag, and no slip.
So it is possible, with the right setup.
In regards to stiff operation, I would say the stack height of the plates including the end plate should fill the basket, allowing just enough room for the spring and then the 'wills ring' clip to go in. This will set your spring about flat before any movement. The other two things to check are that your actuator has not 'dropped out of position' as shown above....BUT even more important...The actuator pivot housing MUST be locked in the correct angular position so as to avoid the cable fouling on itself due to angular missalignment with the cable shroud mount on the outer gerbox cover...otherwise it rubs badly on its outer sleeving. The clutch cable needs to be PVC lined like the featherlight cable, lubed well, and routed freely.
IF all this is good you should have a one fingered clutch....
If you want to avoid drag, slip and mess I would go for sureflex plates, belt drive and Rod seal, but then you need some cash...