86' d-50 custom 2.0 probs

ok truck starts and idles and drives fine cold, as soon as it warms up, it dies and the only way to go is to let it "jumpstart" itself otherwise dies and won't start and run/drive without letting cool down.
parts replaced:
engine
carb
distributor
coil
cap/rotor
fuel pump
various ends and clips for better grounding, etc.