There is an insert for the line that goes from the motor to the master cylinder body. Where the line goes into the body, the insert is missing. Found this out when I changed the unit out and it sprayed fluid everywhere. No idea where it went. I have another unit with the insert but doesn't want to come out and quite frankly, I didn't try hard enough as I didn't want to screw up that one. The unit I do want to use is polished. If I can't find the part, well I guess I will have to use the new one. Any ideas what it is called and where I might acquire one? I attached the one with and the one without.