Well, after applying more closing torque to my high side valve than is considered reasonable for a quality manifold I got the refrigerant leak-by to stop..
Only problem now is the clamps don't stay calibrated.
Three jobs the readings didn't seem right and three times they were off by up to three degrees. And I had re calibrated them all three times to 32*f.
I used a 557 and and calibrated SMAN 3 to make my comparisons and they verified the SMAN 4 was reading wrong.
So much for my participation in the wireless revolution.