Keep the Skinny Birds Flying Safely
IIRC, installing .020 over bearings requires an STC. Is that what the issue is?
Check with Harry Fenton, he's the A-65 guru.
Here’s the website with his ruminations: http://www.bowersflybaby.com/tech/engines.htm#harry
Hi Andy, I sent Harry an email a couple days ago. I bet he gets lots of them and has to weed through them. Or maybe he’s done doing it.