Put the points back in and see what happens.
Why did you change the vac advance springs? They might be too stiff now.
I changed the mechanical advance springs. There are no vac advance springs. The 292 has a different power curve than the 250 and stays retarded for longer before advancing as rpm's climb. Thus, stiffer springs. I tried like the devil to locate 292 advance weights or specs at least to modify the 250 weights but struck out, thus opting for slightly stiffer springs. The only vac advance present is just the disc on the side of the HEI. Same vac disc from the original dizzy just swapped over to the HEI. This vac advance ( to my understanding) only applies advance at idle. Other than that, I never touched anything vac wise.
The dizzy I was on was slowly failing, thus the swap to the HEI. Couldn't put it back in if I wanted right now.
Another point, I have the timing set to +10 deg on the dot as per factory spec.
