I am working on a Payne m/n 584apw048080aa?g. I had an ignition problem with the orignal ignition module g770ngc-7. I installed a white rodgers module 50d50-843. followed the wiring diagram,added a burner ground, installed the green C chip. the ignitor sparks, lites pilot, main gas starts and shuts off pilot, no flame, main shuts off and restarts cycle. i have had this same problem with a Carrier furnace, tried a Robertshaw mod then a White Rodgers and both acted the same. is there something i am missing? is there a trick that is not in the paperwork?