Clutch Fork Throw Measurement, Need sanity check please Options

[Nozzle]

Hey folks. So after just about two years I'm getting ready to finally reinstall the rebuilt engine and refreshed trans-axle. Before getting the drive-train back up in the car though I read in the Pelican clutch change tech article to check the clutch fork for adequate throw of 0.5 inch. Problem is I'm not sure where to measure from on the fork so I took these picks for a 914World QA check before going any further.

[Nozzle]

OP Update: Based on the suggestions above I planned to add a shim or two to be on the safe side but couldn't get a socket with a small enough OD to get a bite on the pivot ball. So I left it in the stock configuration, crossed my fingers and went ahead with the install of the drivetrain. I followed the above method of putting the transaxle in gear and used the ability to rotate the axles independently to gauge clutch engagement/disengagement as I adjusted the clutch. Then using Dr. Evil's suggested 1/4-1/3 pedal throw sweet-spot I wound up with an adjustment that looks like the photo below. Does that look right or does the pivot need shims?