Here are a couple photos of the modifications I needed to make to fit the new stemhead. I notched out both the top and bottom of the aluminum using a Dremel tool. It took some persuasion to get the old stemhead out but repeated strikes with a wood block finally knocked it out. The new stemhead is thicker than the original so it was also necessary to ease the corners of the deck and bow using a bastard file. After a couple sharp blows the new stemhead fell into place.