hogan,
So with that said, the +U is still a minimum root face of 1/8" no matter what? If the plate was 1 inch then the root face could be between 1/8 to 1 inch? Then that wouldn't be a double groove then right. It is a bit confusing, but I too am studying for the CWI.
I am assuming that a PJP square butt without the double V is not prequalified or it would be under Joint designation B-p1b -GF, am I right?