I recently purchased a Tracker Targa and have noticed while towing that the motor wants to pick a side to lay on while in tow, even with the transom saver hooked up. It is a 90hp Mercury 4 stroke and I can't find anything that would lock it in the center position. I have been using a tie down to hold the steering wheel but there has got to be a better way. Any suggestions or something I am overlooking would be helpful.