new shift shaft seal leaking

As redfish mentioned there is an inner and outer seal on the selector shaft. I will also say that there is a pivot pin at the rear of the main case with one or two O ring seals on it depending on the shaft you have. You have to remove the tail housing, valve body, and let the rear band adjustment off to pull the shaft completely out. I replaced my one O-ring seal with a double O ring shaft and seal from A&A transmission. After all that my front seal is leaking too. LOL
Matt