I have a 1987 DT200 200hp anniverary edition. On one of the first occassions I went out, and the last time I went out, the engine really surged above 3,000rpm. It was bouncing on the back bad enough that I had to throttle back. Below 3,000rpm it ran fine. It did this once the very beginning of the year for about 15 minutes then ran fine the rest of the year until the last time I went out when it did it again. It only does it under load. Just wondering if anyone might have any suggestions.<br />Thanks