Need help with my slant six

OK, good deal; sound slike you are on top of things! One thing to know is that during cranking the ballast resistor gets bypassed and 12v goes direct to the coil +. So it can have good spark when cranking but none when in the RUN position if the ballast is bad; the ballast is in series with the coil in RUN. BTW, 6 month old regular can be a bit sketchy these days but if it smells OK, it is probably OK. I have gotten into the habit of using premium if any thing will be sitting for a while.