problem solved....kind of
Not sure what is going on, but after repeatedly bleeding the system thoroughly (pushing up from the bottom with a syringe) I had no luck with the Sigutech. Put the OEM back on, bleeding in the same method and the clutch works properly again.
Both slaves had a ball bearing visible in the piston, so I am fairly confident I did not lose it any where. Measured the depth of the piston and found the Sigutech one was slight deeper (1-2mm). No idea if this makes any difference, but it seems like it would. There was never any good resistance in the clutch action with the Sigutech on it.
Got the slave from KTM twins, so I guess I'll call Ron up and see what he can do.
Thanks for all the help.