Does anyone know what the 'A/D Rating A,B,C' in the Can Slim Checklist means?  If it means Accumulation/Distribution Rating, it doesn't work consistently.

I believe it does mean Accumulation/Distribution. I reported a bug to MarketSmith about the evaluation of the A/D values as whenever there is a '+' or '-' associated with a value such as A or B or C etc., MarketSmith evaluates it as a FAIL. Is this what you are experiencing?

Yes, now that you mention it, that is exactly what I get.