Hi Donnyc,
Did not want you thinking I was talking cr#p, but your right they are not a Reg like the Taylor's or Abbott's aftermarkets, just while we are on the subject have any of you scientists at AWT made one for the AAs yet, I made a simple prototype with spring & floating bearing but cannot get below the 100 bar with power above 10 ftlbs, been pulling my hair out, reduce pressure on one & gain far too much on the other, been able to keep under the sub but still too little power at the lower fill pressure end.
Regards, Glynn.
Quite a few