Refurbishing a fuel sending unit

[Raykahn]

My fuel sending unit didn't read my fuel levels properly, so I converted to the single pump setup. I'd like to refurbish the old sending unit given that they can be difficult to find. The pumps work fine. It looks like a previous owner had it out and painted it with POR15 or some other Fuel Tank Sealer (probably trying to slow corrosion).

I'd love suggestions on the best way to renew it. I am thinking either sandblasting or sanding it to remove the rust and paint. At that point maybe repainting it again with POR15 Fuel Tank Sealer.

The tracings I can probably pull/replace from a regular C4 sending unit. I had tried cleaning them with the WAZOO guys at our last maintenance day but that did not fix them, so they are probably toast.

In the meantime, what is the best way for me to store it so it does not corrode further? Should I sprits a layer of oil on it so its not just sitting dry in my garage?

Appreciate any help,
- Zach