Distributor Swap Question

Alright, so i installed the distributor. Everything went in no problem. Dialed my initial timing to 14 degrees and reset the carb. I did notice that after sitting and idling for a few minutes that it seems like my engine warmed up quicker. It didn't overheat, but my temp gauge hit the point it does after driving it for 15 minutes or so. Also i now have an oil leak that looks like its coming from the rear of the engine. Didn't see any oil around the distributor but i need to crawl around and see if i can pinpoint it. I had driven it faster and farther the day before the swap then i had since i bought it so i am thinking i might have knocked all the good parts off of it on the trip.