#1: Won't restart. It has to cool down. WAY down (<100 degrees) for it to start up again.

Carburetor over heat. It usual happened when the LSN too lean.

#2: Fuel is coming out of the air intake. Not a whole lot, but enough for the air filter to get pretty saturated with fuel after a while. Once the filter gets too saturated, it starves the engine and makes it quit.

HSN too rich.

#3: Runs hot. Once I lean it out enough so it's not spewing out fuel from the pipe, it starts running in the 290 range.

When the LSN on leaning side it will cause your engine running hot too. But when you rich the main needle to cool down,then the engine will become weak.

Rich the LSN and lean the HSN. Try to find the balance point.