hardcorelegend

I am still new to the Wankel experience. Can anybody help? My 81 RX7 is in good mechanical condition. The only major problem it has is that it leaks drops of oil while the car IS RUNNING. Eventually, it leaves a decent size puddle. Any ideas what is causing this? I want to get it repair but I want to at least know what is wrong before I bring it into the shop. Thanks!!!