Does yours ever die after going through water and then coming out and letting off the gas? Can’t figure out what’s going on but I think it’s the temperature thing people mention, I’m never in the water long enough to cool it down so I’m hoping that’s it. Never have any problems while I’m in the water on the gas.
Never mind I saw where you let off with the exhaust under. I guess I need to try spending some more time in the water letting it cool down first and then see if it runs better. I’ve got everything sealed up, all the deletes done, and everything is greased that I know of.
Its very possible that it’s just not getting cool enough to go into the high idle!! Also… make sure your spark plug boot is packed with dielectric grease!!