while my gas tank gently seeps

[speedlimit85]

Noticed some gas- over full. Cleaned it up looked in the morning. Changed gasket petcock to tank looked to be seeping. Hopefully repaired. The rubber mount tank to frame by the seat is coming apart. I carefully put what I have back.
They don't make the part anymore. Any replacement ideas?

[LAB3]

The fiber washers on the bolts that hold the petcock to the tank are often overlooked as a source of leakage. No need to hunt those down from a parts house, you can get them at a local hardware store. There's an English unit size that's just a hair too small to fit into the bolt, a small piece of rolled up sandpaper reams it out big enough in short order.

[DiverRay]

I don't remember the size of that bolt, but 6mm is 1/4" and 5mm is #10. As LAB3 said, you will need to ream them out just a little bit.

[speedlimit85]

cleaning it made it run better