Flatline Reg nut stuck

[saml604]

So I just picked up a used flatline 68/45, and everything looks good, except when I try to adjust the output pressure, i just can't get the nut to budge with an allen wrench. Any tips?

[Dayspring]

did you unscrew the retainer washer?

[saml604]

hmm, good idea :rolleyes: :D