Just lean her out in th 2000-2750 cruising range under light load to around 14.5
when you get into it, go back to 13.8 I run this way on an 07 Electraglide with a big bore and cams. 48mpg

 

Without auto-tune, a dyno tune, or an AFR gauge how will you know what your AFR is? The 14.5 is a good number for some bikes in the cruise range, but 13.8 is a tad lean for WOT if performance is important. For me, I value gas mileage, but when I goose it I want it to go without being restrained by a less-than-optimal AFR. Most tuners use 12.8-13.2 for WOT, and I use 13.0 mostly because Fuel Moto uses that value, and they have vast experience in tuning.