Long story short. Car was running OK, a bit rough at times. Put a new rebuilt distributor, car ran fine for a couple of weeks. Then starting acting up, like hesitating, jerky jerk. It got worse and worse to the point of only running for a few seconds. Specially struggling when trying to drive. Went to the fuel supply rabbit hole for a while but nothing. Then I decided to check out the dist. and the cap had oil in it. I don't know much but it seems to me sparks and oil don't go together. Took the Mallory out and it had oil in it, like a couple teaspoons. I put the old dist. back on, and vroom! Car runs great. This car seems to have constant dist. issues; why would oil find its way inside the distributor? Did I not tighten it enough? Some seal is broken? Is just messing with me because it's a hot rod and it's teaching that's the way of owning old cars? I'm a newbie. Car has a 49' Mercury Flathead with a SCoT blower and dual Webers 40DCOE. Mallory coil. Dist. is a mechanical advance Mallory 2-bolt crab style.