Dumped the vinegar out of the tank, went ahead and got a another petcock off ebay along with other misc parts to get the motor turned over. sprayed the gas tank with wd40, and capped it off. Got most of the rust out but there's still a bunch up under the topside of the tank. Looks like I'm going to to have to turn the tank upside down and do the treatment again. I hope the gas lock holds up.
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mgentz how's the motor running?