Clutch pack back together and looking correct this time!!
Ended up with one washer on top of the spring on the side that had the sanded-down drive disc, and one washer plus one shim on the other side.
See pic new corks visible, plates spin free, springs returning the pressure plates to neutral position well. Minimal movement but clearance seems good.
Am now wrestling with the cutter drive belt, trying to get it hooked up while everything is out of the chassis.
