.... I think the reason the redrill did not catch on is that a lot of people thought you had to run the stinger and Jim did not push his standard short arm stuff as much as I think he could. I am sure I am one of the only people to be running what Jim called the Handling Improvement Kit.
If we assume the redrill works as promised, I can also see the very idea being confusing once the Nth short and long arm kits are compared side to side. The full short arm kit hangs down lower than a stock short arm, which is the opposite of the Nth long arm. The same (presumably smart) guy designed both systems. If we can understand the importance of mount locations and instant centers, then maybe we can start to understand why these two kits can look so different, yet are striving towards a similar goal.