Ron,
A friend of mine and I have been following this build and we wanted to ask you a question about something that we can't figure out. I know you had the barrels clamped down and spaced out on an Aluminum I beam, but how can you have that many spacers welded in place before you start to regulate the gun? It looks to me like all of them except the front spacer are welded permanently together. Do you get enough adjustment between the front and the next spacer to get it regulated?
Just wondering and couldn't figure it out. I really like this build and I think you will be happy with this caliber. Bob