I read there was a recall or some problem with thermostat housing. My engine has a corroded thermostat housing and I just bought the part, my question............ is this something a dealer should do as a recall ??? Also, I need some information on SB56 I don't know if it has been done on the engine. Also SB39 do I need to take boat to a dealer, I live in a small town and there are no Honda marine dealers around. Thanks To TT