I havea 1996 6hp johnson on my 14 ft aluminum and i like to troll for brown trout...but for some reason wheneever i take my hand off of the throttle arm the motot starts swinging left making me vere right when im trying to keep a nice straight line. is there any way to adjust it so its a little tighter. where i can take my hands off to reel in with out out fighting the boat?