I have tryed everything you guys mention at lease 5 times each the longest it has run was 7 seconds then it would not do it again and that run was a very low idle.i checked the head it was a little loose tighten it.I tryed the different setting of the carb from 3/4 turn to 2 turns i installed a new glow plug kept one off to the side just to check the glow driver for heat it was and is fine.I kept the setting were it has run best for what reason am not sure if something maybe wrong with the engine i was hoping it would hit and stay running but it does not look like it is going to. This has to be the hardest engine i have ever owned to get running and i have a few 1960s new engines that run and start easy.I do not want to give up on it but the time i waste trying to get this engine to run is uncalled for i want to thank everyone for there support