Just got back from a very interesting meeting with Mr. Olson at the Kanstul trumpet factory. Rather intimidating as I had not previously met either gentlemen. We spent most of the afternoon measuring lead pipes on 4 or 5 older Olds trumpets from my collection. A slow laborious process accomplished with large trays filled with discs that vary in size by only .oo2 inches each. Mr. Olson was trying to get info on the differences between all the Olds bore designations marked on the various models M LM SYM etc. Mr; Kanstull was very nice and easy to talk to. He gave me some frozen Halibut that he had caught in Alaska.It was neat to be in the room with 2 guys that were in the thick of it at the factory when they were making horns I've grown to admire so much. I can post some photos if anyone wold like.