Hello, newbie here. Read through as many threads as I could find on this model but have a few questions for owners or anyone who knows. Looking at one with 6.2 MX motors, closed cooling about 600 hours each. Kohler 7.3 GEN sat with about 700 hours Boat is out of the water now being bottom painted and buffed. Really dirty in the shop, but still looks to be in great shape. Things I have learned from friends and my own research indicates the biggest issue with boats of this age would be structural issues with stringer rot or soft deck. If I read one of the threads correctly, this vintage mariner has foam core stringers and aluminum supports under the deck. Does that lessen problems if this is correct. I am pretty proficient when it comes to mechanical things to check out, but not much on boat construction of this type. I have been able to confirm it’s always been a freshwater boat used on lakes, but never open water like the great lakes. Appreciate any knowledge on this model, problems or anything else to look out for. Thanks!