Ok my tractor has developed an issue and we have been troubleshooting for over a week now. Once it gets to operating temperature in high RPM (2000-2500) it stalls out. I have drained the fuel tank, replaced the fuel filter, bled the fuel lines and today replaced the fuel pump! STILL STALLING at high RPM. It only does it at high RPM under load after it is warmed up. Can run it at low RPM and it will cut out once in a while. Any techs out there with ideas???