I believe that is a very good distance, I had one that was a lot further out and went through a bunch of shimming to get it to within .010. The clutch has performed flawlessly since then. As a matter of fact, I had the car out today for the first time in a week or two and was thinking to myself how well the clutch works.
If your interested, here's a link to a thread about it :
https://www.fordbarn.com/forum/showt...ghlight=clutch.