I haven't used my Mamiya 645E for quite some time now, but I decided to start using it again. I removed the rapid-wind grip and placed the standard rewind crank lever on in an effort to reduce size. I noticed that the rewind crank lever seems wobbly. I don't remember it being so wobbly in the past. I double checked to see if I had snapped it in correctly, but that did not solve the problem. I also checked to see if there was some loose screw in the lever itself but could not find any. Anyone else have any issues with there rewind crank levers? Would buying another crank lever solve the issue?