What kind of oil temps or head temps are you seeing? How do the plugs look now? Are you running dino oil or synthetics? If your getting 300 miles out of tank, you are almost certainly running lean.
I get about 240-250 from a tank, and I (generally
) shift at 2500-3000, using a basic stage one setup, Rush pipes and SE intake, and a PCV setup by Fuel Moto.
I normally see 230-250 degrees on my HD oil dipstick, and it's pretty consistently in that range, which I feel is perfect with synthetic oil. Hot enough to burn off the condensation in the oil, and not too hot for long life.
It's all yours to do with as you want, but I wouldn't want my bike running that lean.
73 Sporty - Sold
07 Sporty - Sold
09 Vivid Black Road Glide (FLTR) with ABS, Security, Fuelmoto Satge One, Clearview, Harley Hammock Seat, Hogg Chopps Lowers, Bright Ass Tail Light, SERG Headlight Bezel, Detachable King Tour Pak, Painted Inner Fairing, Cruising Southeasten Wisconsin, Delivered 3/6/2009:clap:
09 Black Fat Bob (FXDF) in Vivid Black of course, Delivered 5/1/2009