
Anyway, if you are planning to keep the bike, renu it. I do think looking for a used tank is a good idea, but the tank design on the Vision was fundamentally flawed. I think it's riskier to buy a used vision tank sight unseen than most other tanks because the water collects in a vision tank and rusts it out in no time.
The other possibility is to make sure the inside of the tank is clear of rust and POR it again, this time, do more than one coat, and let it collect down in the bottom of the tank where the leaks are. It will reduce the capacity of your tank, but it's alot cheaper.