TST & EZ stack for towing

[GShail]

My truck is used for our Auto Transport business. Right now the truck works great towing with the TST set on 6/6 in combination with the SPS 62. Of course you are always looking for more. I have read numerous posts about TST and EZ stacks working out pretty well. My EZ has been sitting in my closet for some time now but I am thinking about using it in a stack setup to enhance the low end. What is the proper sequence EZ or TST first? There are threads mentioning it working both ways. I am a little hesitant to even try it since the truck is towing better than ever right now. Since I have the EZ box just sitting around I suppose I need to find out for myself. So again the question is, is there anyone using this stack that tows heavy frequently? What is the proper sequence, TST or EZ to MAP first, what settings to try initially?