I now have my multistacking leads and I still have issues. I took the current clamp and AC measurements out of the picture and just used the meter only with DC measurements. I used the DMMcheck+ standard. What I found was the current was on the money and the Voltage was extremely close when each was measured individually. However when combined the 5.0000 VDC standare read 3.90588 VDC and 1.003 madc standard read 67.01 madc. The math agreed with the readings at .2617 Watts.
I did check with Doug Malone who makes the DMMcheck+ he confirms the the standard can be used with voltage and current simultaneously.
I don’t know if it is my mooshimeter or the firmware but something is not right.