Do I understand you right, you have installed the DAJ?
I installed mine exactly two years ago, June 26th 2007

I have not changed my spark plugs since. They still looks new.
Mine is running too lean at low RPM now. I adjusted the pilot screws only 3/4 turn out and opened for more fuel from the DAJ.
It`s running perfect from 2000 RPM and up, when the DAJ really starts workong. I have to do somthing with the low RPM, but I have not decided what... I have to think, or maybe someone have a good suggestion?
I`m really looking forward to get it on the dyno now...
I hope there is a dyno at the European Inzane in Finland in two weeks.