1/2-20 and 9/16-20 are the fitting sizes on the MC....at least this is what I come up with searching this MC on the web. I need adapters 1/2-20 inverted male flare to 3/16" female (3/8-24 thread) and 9/16-20 inverted male flare to 3/16" female (3/8-24 thread). I am having zero luck with the local boneheads at the counters...I fear I may have to go to napa wh and look in their weatherhead catalog myself. I did find a dorman part #788-515 for the 1/2-20 adapter. I found on O-reiley's web a Edelman 258303 for the 9/16-20 to 3/16. Can anyone confirm these are correct adapters? Can anyone give me the weather head part numers? Any info would be appreciated. I tried searching the web but all I come up with are inverted male to AN adapters. Thanks.