Ken Schafer loaned me the one that he bought from James. Extremely well put together. I used it on our 78 Royale. Simple to install. 10 minutes of bleeding time. Done. Then went to put it on the new master cylinder on the 73. Seems that this MC that I got at Auto Zone. Has just alittle wider body. then the Auto Zone MC that's on the 78. Moving the back hole at the back. Would take care of the problem. So if anyone runs into this with Jim's bleeder. It's the MC. NOT his fault. Bob Dunahugh