HI<br /><br />MY MECHANIC SAYS MY ENGINE IS LOADING DOWN, WHAT DOES THIS MEAN, AND CAN A PERSON LIKE MYSELF, GO TO DUSKY MARINE OR ANY MARINE SHOP AND GET THE PARTS MYSELF TO FIX IT,, MY ENGINE IS A 85 JOHNSON OUTBOARD 90HP,,,, IS IT POSSIBLE THE POWERPACKS NEED TO BE REPLACED,?