is It really so that the rare calliper should be rock solid? I’m trying to figure it out but it is mounted on rubber suspension that means it can’t be rock solid?! When I pulled the black rubber thing ( in the right red circle) it slider in the hole so I could see movement from the other rubber thing (in the left red circle). This must mean that the rubber is al the way in the hole and since the calliper is mounted like this there will be some “suspension” feeling?????