Ok, looking at my plans of my Volmer VJ-22. I noticed a discrepancy in fabricating the hinges. They are like the Aeronca hinges on the rudder and elevators. The plans state several different sizes. .375 od x 060 wall, .380 od x 060, 375 od x .250id. All 4130. And it states to "ream to fit" after welding. After converting the numbers over I come up with uncommon sizes. Best I figure is it looks like 3/8" OD x .065 wall with .245 ID would be my best option and then ream to fit a .250 hinge pin. Would you say this would be correct?