So I have a '08 KTM 250 XCF-W. When 100% stock, I had a little bit of pinging at low rpm, high load (lugging) conditions. I got the JD Kit, ran the recommended settings (180 Main, Red needle 4th clip) for it and it got rid of the decel pop and the pinging. It ran great. Then I decided to install the PowerNow and PowerNow Plus. I left the jetting as it was, but got a little ping while lugging, similar to it was when completely stock. Then, I dropped the clip to Red #5, and it seemed to help a little, but not enough. I then double checked the fuel screw to Eddie's recommendations, and it came out to be about 2 3/4 turns out from fully seated. Then, I decided to go all out and go the the Blue needle, clip #5. Here, I have even more ping under lug than before, which doesn't make a whole lot of sense since the blue needle is supposed to be richer. Now I'm out of ideas. Suggestions?