94 Chevy 12v Cummins-- Resealed ve pump new leak parts question
 

Okay I've got a 94 chevy 3/4 ton with a 12v swapped into it. Fresh reseal on ve pump I finished last week. I also turned up the pressure a bit and swapped in a new fuel pin at the same time, along with a 366 governor spring. My problem now is this:

I've got a massive leak coming from the manual fuel shut off valve and cannot get it to reseal with just the provided oring. When I disassembled it all there was only an oring, I'm wondering if there is supposed to be a washer or other type of gasket that holds that oring in, as it does not seem to be staying in place any longer.

bump

Fixed the leak with a larger oring and a better washer from a pool water pump.