I noticed Detroit Diesel has a new overhead procedure for N3 injectors. My current 12.7 (500 E) year 2000 has of course N2 injectors but was wondering if one could possibly use the same procedure. Engines like the old cummins 350 and 400s had two methods to set the injectors but I found the bottoming method on the maximum downstroke of the rocker, tightening the injector down till it bottomed, then backing it off to spec produced the most hp and the engine ran best and smoothest. I once had a Detroit mechanic that must have knew his stuff tighten my 81mm injector height a little and the truck just purred with great throttle response and pulling power...I have never had an overhead respond in the same way since. Just wondering if anyone has done the the N3 method on N2 injectors. In my mind it shouldn't hurt anything but I want to be sure.