Fuel leaking from aux tank?

[cessnadriver]

To ALL. FYI, I have found a gasket manufacturer that will make the S1588-1 fuel sending unit gasket with the popular material VITON, the same as McFarland's. For about $25 each VS McFarland $36. If you replace all six gaskets it's a good savings. Currently this gasket is NOT FAA/PMA but with interest the guy said he'll go through the PMA process. The same company currently offer fuel cap gaskets for many aircraft types, including Skymaster, with FAA/PMA certificates for around $8.
Use at your own risk. Just trying to save you guys/gals some money.
Thanks, BILLS