The V2K has a COMPLETELY different oil check procedure. Read the manual and follow it to a "T".
Basically, the engine has to be at operating temp in order to properly check the oil, and you check it after idling for a minute or two, do NOT rev the engine before the check-idle only.
It's a semi-dry sump system meaning the engine oil isn't all in the crankcase, some of it goes elsewhere...which makes more power, cools the oil better, etc, BUT it makes CHECKING the oil a royal pain in the neck as compared to, say, most cars (pull the stick, read, reinstall on a cold OR hot engine).
90% of the time when I hear of this complaint, the oil level is overfull, and it only takes an ounce of over-filling to puke half of it's capacity out. VERY common.
The next issue is blowby, which hasn't been too much of a problem-at least not here. If the engine has much blowby, the oil will end up puking out of the vent, then all over the side/rear of the bike, on the ground, etc. Is the engine USING any oil? Do you have to fill it often? SOME oil usage is considered normal on these, so keep that in mind. 1 qt every 2000 miles is considered normal per Kawasaki. But again, it has to be checked CORRECTLY, or you'll overfill it and it'll puke.
Also....engines in general can sometimes tend to "make" oil. In other words, fuel vapors can build up in the crankcase, and the oil level rises over time. What causes it? USUALLY, due to riders using the bike at lower speeds, idling basically, lugging the engine, blipping the throttle a lot at a stop light, start & stop a lot, start the bike in the garage for a few seconds then shut it off-do those a few times and it'll make oil, then the oil level rises, and it pukes. More common on the big vulcans and REALLY common on the air cooled Kawasaki Mules used to run to the mailbox and back where it never warms up.
Another scenario I've run across is a DIY oil change gone wrong. Dump the oil from the drain BOLT, then refill per service/owner manual capacity. There are several drain bolts...if they aren't all drained, it'll be a guaranteed overfill and subsequent oil puke out of the intake.