On forums (if they are as good as this one) you will hear about peoples issues/problems as well as the many good experiences. I've had many brands of bikes mostly Japanese and Harleys. Personally, I've found Kawasakis to be among the very best. The dealer you bought it from should be able to trace and fix your issue, if they can't, go to another Kawasaki dealer. A bad dealer (just like a bad car dealer) will certainly leave you with a bad opinion of the bike, and you may indeed find other folks on the forum who have had bikes not prepped properly by a poor dealer. The bikes come in a crate and are supposed to go through a very long prep list, I saw the one on my bike. If you call Kawasaki about a bad dealer experience, they will follow it up.
I used to work for Apple and I would occasionally have some people complain to me about a problem they were having and I would ask them if they called the free support line. "No", they would reply; then I asked if they took it in for the free support at the store, "No" again. I would hand them a business card and tell them to call the support line and call me back if you didn't get satisfaction. I rarely got a call back in 15 years.
No product is perfect, a part of your satisfaction comes from not "if" you ever have an issue, but if your issue is taken care of by your dealer and manufacturer.
Best of luck!