http://www.psycan.com/Product/Details.aspx?ProductID=12228

Specifically

http://www.psycan.com/ecms.ashx/22565d2e-72db-43ea-a1df-778741cb1d34/Documents/G-MADESampler.pdf

had some more good information. Looks like level 2 is (generally) grade 2. That's closer inline to what I'd expect (although they probably should have gone right to level 3 based on the charts).

JB