91 TB Fuel pressure regulator source

I've had a long list of problems with my 1991 civic LX and now have just one last issue-the fuel pressure regulator. I can't seem to locate one that works correctly. All the ones I buy that claim direct fit run 45 PSI when tested-they may come in any one of many suppliers boxes but in the end it is the same Mexican knock off that claims 43 psi max (41 psi is max for a 91) and they all test 45 psi.
I've tried Honda-discontinued-----NOS, no luck----e-bay----salvage yards. What can I do?

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