I just got my project Lund finished and had it out on the river the other day. My question is, does the 1993, 115HP Mercury charge the battery while it's running??? And, at low RPM the motor seems to have a little vibration and kind of a *miss* sound to it, not a bad one but enough to notice.......as soon as you give it a little tweak on the throttle it responds fine and runs great at full throttle. It's on a 18ft. Lund and it gets that bulky boat movin' jus' fine!!!! Anyone have any ideas for me?!?!?! This is the first motor of this size that I have owned........thanks for all your help!!!!