I got this boat with 12 hours on the newly replace Jasper motor after the previous owner didn’t winterize it and blew it. Our guess is the frozen water cracked the intake causing the original motor to blow but the shop that did the work only changed the motor and put the original intakes back on it. This time it blew about 10 minutes from the dock shortly after I opened it up to head up river. I had only put about 4 hours on it so 16 hours in and boom. There is rust in the #4 exhaust port and that’s the cylinder it dropped. We haven’t pressure checked it yet but plan to soon. All signs point to a cracked exhaust manifold. And of course it’s the side nobody has in stock or on eBay.