I have an 05 FLHT with KnN a/c, VnH ovals, Mild Cam (bought it with the cams in there and do not know what they are) Dyna Twi Tech Ing Module. 48 slow speed and stock main. I originally did the shims. After reading the articles by J Minton put the sporster needle & spring in,I like it much better and played with it a long time trying different slow jets and washer combinations to get nice tan plugs. My milage combined 36-38 freeway 42-45 (one up) He did say no need to change the slow jet but my plugs just did not have that tan color I was looking for. Hope this helps I see you have a Dyna so I don't know how close this will get you.
Why beat a dead horse , when you can ride a Hog!