I finally have gotten my old Johnson to run good enough to get it off of the trailer and I was wondering how fast this boat engine combo should go? Boat is 1956 Vagabond II 15' with a 1957 Johnson 35h.p. with brand new Michigan Prop. (10.5 x 12) Boat only should weigh 315lbs. I figure with everything on the boat it should weigh no more than 600lbs. Best top speed was 24.9 w/ one person and relatively smooth water. Thanks 