RE: Welcome to Club SAITO !
Robert, I packed your engine up to send back then remembered that I didn't check the rocker clearances after running it the other day. I unpacked it and checked, the exhaust valve had closed a little, I re-set it to .004 and ran it at 7,500 rpm for 16oz (about 22 minutes) and it did not change again. Top rpm with an APC 14x6 is 9,500 I say it's good to go.