Well Philip, I have watched Doctors perform but couldn't tell you what they do that is special....could you.
The problem is simple, You want to have DNA testing, I am fine with that, that is done by a specialist who is trained in doing his job, I am fine with that.
Then you want the whole thing to fall apart by having someone, who isn't trained in scale calibration, check the captors Scales, I don't think so, do you take your car to be repaired by a guy down the road, just because you saw him change a wheel ???
You stated in one of your posts that you know how to weigh fish, well looking back at the way you weigh fish, I would say you don't weigh fish in the correct way, yet you have been fishing for years.
The members of the BRFC may weigh fish correctly, but they don't know how to calibrate scales. You didn't state what scales were calibrated twice with different readings, just something you read.
If I knew exactly what Weight's and measures did, I would tell you, what i do know that is fact, is they have to be trained to calibrate scales, simple as that, and that i have said time and time again.
The DNA testing of fish is the way to go, the calibration of Scales by the BRFC is not, and is going backwards.