I am going to mount an approx. 235 lb, 2000, 50hp Evinrude, w/power tilt, 20" shaft, on a rebuilt, 15" x 1.5" transom using CMC, 5? Vertical Extension, and 1/2", grade 8, s/s bolts, what is the correct way to insert the bolts, is it nut on the inside of transom or outside. I have seen both, and...