I have a 1992 FJ that I had converted to 1hdt. Great job done and it is all clean. I had the job done in Colorado and we had moved back to Nc. After getting back to Nc a problem had developed. When the rig heats up on days that it is hot out it will not start after I turn it off. After it sits for a period of time it fires right up. Starts every morning and when it is cooler. I have replaced the starter with a brand new one and the fusible link. Battery is brand new and holds 12.75 volts. I am not sure what I am missing or what I should look at next. No fues have blown and it looks like all the connections are good. Any help would be greatly appreciated.