I have been having an issue with my bike, I have taken it in to the my local dealer quite a few times for this issue. But all I keep getting is "everything is good." This usually happens in the morning, my commute is approximately 15 miles (all freeway), when I exit the freeway the RPM'S drop below 1500, then jumps above then it abruptly shuts off. It may sometimes jump a few times before shutting off as well. This happened again this morning, (new battery installed in early Dec.) For the most part it restarts, but I have to keep the RPM'S above 1500 to keep it running. Has anyone had any similar issues? [I keep up on all suggested maintenance and get the oil changed regularly]