We bought this boat new, but used it infrequently in the last few years. Recently I asked my boat mechanic resurrect it. It is beautiful, but on the river, it will run for about an hour and then start missing out. It has a Mercruiser I/O. The engine dies and have to wait to restart. The mechanic says it has an "electric" carb. I think he has checked it thoroughly. Does anyone know what can cause this? When it runs, it is great. I am so anxious to get it out, but don't like going out not knowing if I can back it back to marina. I will appreciate any and all ideas that you have.