The timing keeps “jumping” .I’ve tightened the distributor and after timing it, it ran good. I went to start it today and the timing was of. This makes the second ignition system to do this. I have gone back to points (instead of the Crane electric eye) after it kept jumping timing. I’ve read a few posts on this forum and it looks like jumping timing is not that unusual with Hudson engines. Is there something I need to do to correct this problem?