the leak that developed on my 81 was due to the seal wearing a grove into the crank. I had to put a "seal saver" onto the crank. then put a new seal into the oil pump. i ordered the felpro kit with the seal saver (only goes on one way!!!). it was much cheaper then buying the seal saver and the OEM oil pump seal separately. thats my
![My Two Cents :twocents:](https://board.marlincrawler.com/Smileys/marlin/twocents.gif)