Every once in awhile, my engine stalls when coming to a stop. The rpm's drop like normal down to about 2k then the needle will drop to 0 and the engine dies. I've tried to increase the idle speed to about 1600 revs/sec but now when I come to a stop the needle will fall to 2k and then drop to close to 1k rpms and struggle sometimes to get back to the idle speed. I have about 2100 miles on the bike and it started about 400 miles ago. It's been serviced at the recommended times by a kawasaki dealer. Does anyone have any suggestions?