Had a 1969 Merc 1000 but #2 piston melted. Considering repairing myself but found a pretty decent deal on 1972 1150 with tilt/trim (Merc 1000 was manual and was considering looking for power tnt before melt down). Know my way around the Merc 1000 pretty well, any thoughts, advice, or issues to be aware of with the '72 1150?