I found a precision ground "pilot" that measures (a heavy) .311 which I'll use to determine the correct clearance for this Intake Valve. I'll hone the new guide until this pilot just fits in each end of the guide(all the way through) - then I'll know I have the correct clearance, so he don't stick the valve.
The Sunnen HONALL is a miraculous invention. It hones these Rowe cast iron guides perfectly. It's honed hundreds of guides from the old Noots' Custom Cycles days . . . and it's still in use. They ain't cheap, but it's better than a reamer. Cast iron guides have better lubricity than steel guides.
The pilot fits in both ends . . . and the valve has proper fitment.
Now I'll hone the Exhaust Guides, cut the seats(you can see they're pitted) and we'll have a fresh set of heads, ready for another 30,000+ miles - (hopefully)with today's unleaded fuels.