I have 71 Evinrude 3 cyl 60 hp., it has only two mounting bolts. The plate just above prop is 1" below bottom of 15' v-bottom Fiberform surfrider. Am getting lots of spray towards corners of transom, some coming into motor well. Bolts are now about 2.5" from top of transom, any suggestions on how to raise motor effectively with only 2 mounting bolts?