Several times when shut off warm for between 10 and 20 minutes it will start hard and stumble, gas does nearly nothing but choke it more and will clear up in about 15 seconds. It never does it when shut off briefly for a gas stop or for longer than 30 minutes. It always starts fine cold ect. I've heard everything from a fuel temp sensor, crank position sensor, injectors to a tire being low lol... Anyone have experience with this and know what it is? It has not been often enough to easily identify. Truck has 205k but always redundantly maintained, synthetic every 3k, all other fluids done annually, plugs and wires are 3 months old and I always run premium fuel...