@wish what @dklkskr said. I did 2 things to fix my issue. I installed an auxiliary electric fuel pump right at the tank. This pressurized the fuel line from the tank to the engine where the mechanical fuel pump is. The second issue was related to the vapor separating tank that my engine has. If you have one, look at replacing the gasket and diaphragm inside the vst. The diaphragm acts as a 1 way valve allowing built up vapor to escape and bleed back to the front of the system. In my case the vapor lock was happening inside this tank. The diaphragm was installed backwards and wasn't working properly. Depending on the model of vst, determines which way it is installed. Once I bought a new kit and installed correctly I have had no issues for several years.