I have a model 57 (no dash) that I recently purchased. The recoil shield has scratch marks on it from the ratchets making contact. I have been reading previous posts on this forum and took some measurements to check for “end shake” the measurement between the rear of the cylinder and the forcing cone is .001” and the measurement between the cylinder face and the recoil shield is .016”. When the cylinder is open, there is .030” in back and forth travel of the cylinder on the yoke. Any suggestions or diagnosis greatly appreciated.