Stock sizes have to be input with English units, then HS converts them if you are using a metric model. The value HS was putting out was the largest stock size converted to metric. However, I put the stock sizes in as metric. The largest stock size I input was 0.00508m, and HS was multiplying that by 0.254. Giving the 0.000129m as the largest stock size. When I went back in and input the stock sizes as 0.20", the sizes came out right.