I have a 59 Ford with a 292 Y Block that I'm having an issue with. Last fall I installed a pertronix and coil and got it timed and running great. Then it sat all winter while the bodywork and paint was getting done. I went to drive it after the paint was done and the timing was way off. It was so bad that I couldn't advance the timing enough because the vacuum advance was hitting the intake. I removed the distributor, found TDC, reinstalled in the correct position, got the advance adjustment I needed and got it running great again. Last week I had all new exhaust ran, got it home and it was running shitty again. This time it just needed advanced a little. By the way the timing marks are all but gone on the dampener so I am tuning by vacuum gauge. Anyway, a few days later I was getting the car ready for the first cruise of the summer and I went to start it and nothing. Once again the timing needed to be advanced beyond what the intake would allow. So what's the problem here? I'm leaning toward a worn timing chain, but don't want to get into that if I don't need too.