I adjust by measuring the clearance between the disc and pressure plate/flywheel. I shoot for .060"" and let free plat at the pedal be what it is,
Problem with that is, if there is a lot of pedal free play you get into the over center spring which will pull the pedal down. Above works OK if the OC spring is removed.
The standard recommendation when running a diaphragm clutch is to remove the over center spring regardless.
