AMS Driven Rear Roller replacement

After fitting some “self-centering” rollers to my AMS, I discovered that if an odd-size spool has to sit to the left of the guide rail or is otherwise narrow, the spool is tilted over to one side and it wants to move across the rear roller. Unfortunately, I managed to break two of the original rollers getting the bearings off, so when I went to put them back in, I couldn't. Not wanting to spend the money to buy new rollers, I decided to make these simple replacements out of TPU. They print very