| Right Mike, and the higher the force-reduction percentage of the slave, the less the clutch pushrod is moved, so the more likely that your clutch will not fully disengage. Usually this causes difficulty moving the selector to neutral because the plates are dragging.
However, you can compensate if you change the 4-position adjustment so that the clutch lever will engage at a point a little farther away from the handlebar. This will increase the fluid stroke volume and move the pushrod more.
The 20% reduction slave like the one from Evoluzione is probably the practical limit here. | 
Shazaam!
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