Can anyone tell me where I can find a fuel tank grommet with an o.d. of 3/4" and an i.d. of 1/2"? I'm working on a sled that has had a second fuel line installed in the tank and it turns out they used a larger hole than the stock polaris one. The hole in the tank is 3/4" and the fuel valve is 1/2". I can't find anything on line, lots of grommets but no specs, just part #'s or applications. I don't want to buy another tank but if I can't find a grommet I guess I'll have to. Sure could use some help here.