I picked up an unfired pietta 1851 Navy .44 brasser a few weeks ago, for a song, and decided I would convert it to .36 caliber with some other spare parts I had around. Already had a cylinder and sheriff barrel in .36, so tried it fit it together. All goes well except the barrel and cylinder bind with the wedge in, and the wedge is really tight. I cut some aluminum foil disks to drop in the barrel's arbor hole, to see if I could fill the obvious gap. After about 6 pieces, it went together and cycles fine. The foil will only last so long, I'm sure, so what should I use as a more permanent spacer? Where can I get metal spacers that are thin enough? Also, should I shape the wedge or leave it that tight? It will come out tapping with a brass punch.