how to tell if the distributor drive gear is installed correctly?

I will grab some photos, I did have the timing marks on the engine at 10 deg. before, marked where the point of the rotor was facing , and dropped the new dist. the same way. Did not have the cranking issue with the Pertronix unit, it did at least get the car to start, but just could not keep it going, seemed like I was loosing spark till it would die, with this new one, I have no spark and a cranking issue now.