I agree that so far you haven't had great luck with the 5R. That doesn't mean that there is no hope. There are 5R setups that you haven't tried. Hell, Erik's truck went 118mph at bandimere on 37's at 8900 lbs for the dpc. By the calculator, Erik trapping 118 vs you trapping 124, Erik's truck makes more power. Only a few horsepower, but you get what I'm saying. I don't believe that you would trap the same mph at bandimere as you do at home.
Erik's trans never skipped a beat at the DPC, and it ran very consistent.
What clutches are you running in your trans Mike?