Need a new fuel pressure spring for FASS 150

I have been having issues diagnosing high fuel pressure in my 150 with a 12v Cummins and P7100. It had a 55 p.s.I. spring in it, but I cut it down, just to find out my return line was too small and posing a restriction. Do you offer a 40-45 psi spring or can I get one locally?

I might have one or two in my toolbox, one was for a 150 40 or 45 psi iirc. I'll look around if I got one come and get it.