Tuning Smith and Wesson 79G Rebuild

I found a mint condition 79G at a garage sale for a buck. the owner said it was just would NOT hold air.

Purchased the seals on line and after about 5 attempts of assembly it's done! I re-built (made on a lathe)the original Derlin seal in the brass valve. 

Perfect, been holding gas for weeks now. First re-build job. What a great hobby. (learning experience)
 
I got a Crosman 600 and another mark 1 for free. I can't wait to fix them. For now I'm doing alot of sanding and prep work for paint. It certainly is a great hobby. If I do my work well I could sell the two for over 300 maybe more. The Crosman 600 is a pretty expensive gun and mine is the very first batch they made. I really love rebuilding old airguns.