Okay, I know this is an old one but... I just got an HMF slip on and I will be running an open element filter (no air box - similar to the Hot Seat kit). From what I have read here jetting should be 170 main 50 pilot. Any Idea on needle setting or air screw? How about the Dynojet needle, Is it worth the cost? I ride mostly at sea level (Pismo Beach). I just want to get it right the first time. I know someone else has already figured this out. Thanks.