[blykins]

Don't worry with the feeler gauge, just eyeball it. You want it almost touching. The slave cylinder will have an adjusting nut on the pushrod. Just adjust it until you get the fork/TOB in the right spot.

Hydraulic clutches can operate with the throwout bearing riding the plate, but I've had an instance where a McLeod throw out bearing was burnt up by doing that, so now I always recommend a little air gap.

While you're under there, see if you can bleed that slave cylinder. You'll need a helper. If it's a Wilwood slave, you should be collapsing the dust boot almost all the way. If the thing is barely moving, you have trapped air and need to get rid of it.

Did you bench bleed the master cylinder?