vacuum petcock and gas tank issues
I'm new here and have appreciated the help I've already seen from this forum. I've been working on getting a 86 Rebel 450 going that my neighbor had lying around; I rebuilt the carbs last summer and cleaned up the gas tank some, but then I wasn't getting fuel into the system so I got a new vacuum petcock. (old one pictured below)
The new petcock is not compatible with the old tank! The attachment is too large. Also, after the winter, there are some new pin holes in the tank, and it even ate through the jb weld I had used to patch the last one. (pic)
So: what are my options?
1) Re-soak the tank to clean out rust, seal it properly, patch the holes (find someone to weld them?) Find a different petcock? Where can I get one?
2) Get the oversize 250 tank?
Thanks! Any help is appreciated.