We have a 1962 Allis D19 factory LP that has become very stubborn. I have replaced ALL of the following: Alternator, points and condenser (twice), spark plugs, spark plug wires, coil, distributor cap, battery and rotor. Starter seemed to be dragging a little, so I just had it rebuilt. I also replaced the wire from the coil to the distributor. It turns over fine, but will not start. Will not even try, even with ether. I can pull the tractor and within 3 feet, it will bust right off with no hesitation. Points are gapped at 22 per the original owners manual. I just don"t get it. I have checked the distributor and I am getting a full 12 volts inside the distributor. Any advice and help will certainly be appreciated.