05-03-15, 05:30 PM
Raising the needles a notch will richen it up slightly, but are you sure you want to get into tinkering with carbs? It'll mean quite an expense in further dyno runs to check the effect and it seems to me you're feeling something that isn't visible on the graph anyway as the power curve looks quite straight.
If the bike is running excessively lean (and that air/fuel ratio curve looks pretty similar to the one Red98 posted) you'd get pinking which should show up on the power graph. I can't think why it should appear on the road, but not on the dyno, but you could check by running a tankful of higher octane fuel through it to see if that makes a difference.