I am not to formilar with tilt and trim and what it does and would like to know more about it. I am looking at purchasing a new boat with a 1983 evinrude 115 HP but they say that the trim pump does not work properly so i do not know what to do. So if you could provide me with more infromation that would be great. Such as cost of fixing and is this something i have to have?<br /><br />THANK YOU VERY MUCH