Well, I got to the range this afternoon to test the 'fix'.  
What a surprise.  Instead of shooting 2 1/2"  all over the place, I'm down to about an inch, just what is advertised.  The load is the same, only a .376" oversize hinge pin.  Now I'm going to do some load development and I'm thinking of having the trigger re-worked.  It's a bit sloppy and rough compared with the Shilen competition on my Rem 700 SingleShot.  I'm sure that the groups would be smaller with a better trigger.