Rick, When I replaced mine I had a devil of a time getting the remains of the old seal out. The rubber part is bonded on to a steel ring and that steel I had touble with. In the process I put a little burr on the top off the shift shaft which I had to dress up with a bit file and some emery cloth. No leaks a year later. If your shop did something similar and didn't refurbish any marred spots, that could be your leak. Wish you luck.