Can not lower intensity on channels in Mems

If I select Edit Mems and pick a memory I can  not lower the intensity of any channel. If I match the intensity, when I pull the fader down it stops at what it was set to. Even if the intensity is not full, I push the fader past the level and it will not go down past that point. 

Any suggestions ? Am I misinterpreting ihow to do intensity matching ?