will not start hot

[joe cool]

I see another thread similar to this one but ask your forgiveness if I'm being a pest. 91 two cycle, just rebuilt and have ran probably a gallon of gas thru it . It starts great cold and runs good. I have only been driving it when i get a chance in the evenings to get some time on it and break it in.Yesterday I drove it about a mile and when I shut it off it would not start again. When it cooled off it started right up . I was worried because it seemed to be so hot in the engine compartment I took the upper cover off behind the seat for airflow. Same thing today,would not restart after a longer run. I had a plug wrench and the plug was firing great. I noticed there was no gas in the plastic filters ,There is two of them.When I checked the fuel pump was very hot as was everything under the seat. It is above 90 degrees outside today.After cooling off I had my wife crank it up and it immediately filled the filters and started/ Obviously I have a fuel problem. Is it possible that the gas could be boiling in the lines and pump? Used to hear of that years ago on some cars. I do not use alcohol fuel in my small engine stuff. Does the pump need insulated? I have fuel pressure gauges but probably would not be usefull at this low of pressure. I hate to throw parts at it but going to a big race on the 19th and really would like to take it. any ideas? Thanks fellas