So I was in the process of replacing all of my shift bushings on my 85 325e and ive hit a snag at the ball cuo bushing for the shift arm. This is a two piece bushing because I have the pre 86 shifter set up where instead of an aluminum carrier rod I have a steel plate for the carrier. My problem is that the too half of the ballcup bushing wont fit of the new e36m shift arm on either side. I even tried to test go it on the old arm and it wouldn't and the only reason the old one slipped off it is because it was cracked. I had the idea of sanding the inside of the bushing slightly so that it would fit but I wanted to know if that would mess everything up. Any advice/help would be much appreciated