I recently changed out the battery. After new battery went in, I reset the Motronic like it said by cranking the throttle 2 times. It started right up after the new battery was installed. after running on idle for about a minute, I took it off the center stand, it started coughing real bad. Put the center stand back up and shut her down. Waited a couple of minutes and ran fine. about a week later, the same thing happened while still on the center stand. I had it a major service done last fall before I put her down for the winter. Any help????