Colin, I was hoping to hear from you. Thanks for the link to your videos. I WILL have lots of questions....When you joined the barrels with that high temp silver solder at what temp was that solder melting at? When you solderd the ribs with a lower temp solder at what temp did it flow?.... Just trying to get it all lined out to solder next week....oh one more, did you solder with the bores parallel?...THANKS, Ed