2015 R - i found while being somewhat gentle with the throttle, and a lower hash mark oil level, you could prevent any oil from dribbling out of the air box drain tube (item 7) (still gets in the air box, just not enough to drain) - use the throttle and tach as you really want to (shift lights blazing, bumps off the rev limiter now and then, with a sweeping use of the tach from down low to up high) and no matter what low oil level you have, oil will get sucked up and out thru the crankcase breather, then when parked on the side stand, the oil will migrate to the drain in the corner of the air box and dribble out the drain tube under the bike - use a middle window or upper hash mark oil level, and there will be oil everywhere (rear tire included)
the first occurrence was at around 2500 miles..my shop replaced both pistons, rings & cylinder sleeves at the 6500mile mark last season (Oct 2015) the tech pointed out how the pistons themselves were not exactly perfectly round...DNA requested all kinds of measurements and approved replacement
fast forward to the 8500 mile mark and it is happening again...at 11k+ miles its back at the dealer.....DNA came to look themselves this time, and found my bike, and another with the same issue, waiting for them
my service tech stands by his measurements and reiterated that "things just aren't as round as they are supposed to be"...they should be replacing everything all over again soon (Nov 2016)...
i'm looking for a way to have a small catch bottle set up, but there isn't much real estate...