just got boat from shop re: earlier posts. Motor runs pretty well with weak cylinder but wouldnt shift. They went into foot to replace shift pawl, and now there is a distinct knock when you spin the prop over by hand. He says this rattle is common on those v-4s but i know it wasnt there before. What could cause this and could itbe honest mistake for the given work. Seems to me if he put it back together correctly it shouldnt knock. I just replaced prop and spun it before taking to shop and know it wasnt there.