I am good I think. Turns out in the world of tube fittings you have thread types in metric, BSPP, BSPT, NPT, imperial. I determined my threading is either BSPT or BSPP, . I am confident they are BSPT which is tapered since none of the fittings on the machine go in fully to a rubber seal. MSC seems to have the best deal on these so hopefully I have the specs figured correctly.