I finished my top end job tonight (my first). I ran it for about 10 minutes using very little throttle. It took about 25 kicks to start it. When it started, everything seemed fine. The engine sounded smooth, and quiet. I did notice though that it ran a little "rougher" than before. For example, it killed a couple times when idling. Is it normal to not run quite as smooth during the break in period? Thanks.