riding that things since 2.5 years in L.A. on a daily commuter basis - never any problems, now at 5000 miles.
Lane splitting is a dream, but it takes time to get a feel for your width, especially mirrors
the biggest, cheapest and easiest improvement was adjusting the throttle free play.
the second cheap and easy one, replacement was putting in a performance spark plug.
maintenance I've done so far with no pre-experience at all was, spark plug replacement, wheels off, valve adjustment, engine/gear oil replacement, throttle free play adjustment, front brake pad replacement