I think i am stacking my boxes wrong. Where do you install an edge ez when you have a TST pmcr??? And what advantage do you have with it stacked over the TST on it's highest setting. Lastly what settings do you run the stacked boxes at, i am sure this is my problem as my truck seems lame with them stacked. My old van aaken was quicker... I am new to this game so thanks for the help.