Do you have the the "wave washer seat" (also called "spring seat") and "wave washer" correctly installed?    Also, the first drive plate from the outside is different (smaller outer diam.).

The wave washer is called a judder spring and removes clutch chatter when the manufacturer deems it to be a problem.  Not all systems may have one.   It sits on a spring seat and if the spring seat is warped or damaged the judder spring will be pressed unevenly.  A damaged judder spring or wrongly installed or missing will cause weak contact between the discs and plates.  Confirm that the plates and discs are in installed in the correct order.  The disc installed against the judder spring may be of a larger internal  diameter than the other discs (Honda).  Install the clutch wave washer (judder spring) with the concave side toward the inside (Honda).  In the event you have intermixed the plates and discs look for wear marks on the disc that was previously against the judder spring.  Hope this helps.  

Just in cas you have overlooked it,did you notice the thin metal ring that goes in the assembly?
It is a few mms wide and is angled slightly so it exerts pressure.
I don't know the exact name of it but if it has been left out the clucth will be prone to slip.

Thanks for the help guys.  I'm revisiting this thread because my clutch is still slipping and it's getting worse.  It rarely happens in 1st gear, but 2nd, 3rd, and 4th I get slippage anytime I try to accelerate hard.

So far I have replaced the clutch plates, pressure plates, clutch lever sping and washer, and the piece that is attached to the clutch lever (near the engine) and pushes up against the bar when then hand lever is pulled.  It never got better but was no worse than before I replaced the parts until recently.

What else could be slipping???  I have all the parts in as they should be.

Thanks for the suggestions but those parts are all replaced and the procedures followed.

The friction plates (I call them clutch plates) are EBC and so are the springs.  They were soaked in Honda motorcycle oil overnight.  I guess I i'll just have to replace the whloe basket.

What year clutch basket will fit the 86 F model?

What is the release pin?

I have just remebered something from when I changed clutch plates on my savage.
there are 2 thrust washers and they are different outside daimeters.
So worth making sure you got them in the correct positions.

If you have removed the basket there is one that sits on shaft into crankcase bearing hole. Thats the bigger one.

after you fit the basket another thrust washer goes in which is slightly smaller outside diameter (3 or 4 mm less).

If these are in the wrong way round you don't get enough oil to the plates and that will cause slipping.

Might not help you but worth a mention just in case.

Good luck with it m8,