potential issue with hasselblad 500cm winding
Just bought a 500cm and it seems there is an issue with the winding but I'm not sure. When I'm winding on after firing the shutter, winding seems to have full tension for the first 90% of the winding. Right as the hollow red circle on the winding knob gets to the red dot on the body, the winding seems to suddenly drop all tension as I finish the 360 turn. No tension between the hollow red circle and the full red circle. There’s a loud clack as the knob reaches the hollow red circle. I have the old style circular knob without a crank handle. It's not nearly noticeable with the back off but I can still tell the winding is suddenly dropping tension at the beginning of the last 10%. When I put the film back on, it's much more pronounced, and even more so when there's film inside the back. It seems like at 90% of a full 360 turn of the winding knob, the winding instantly drops all tension instead of keeping tension throughout the whole 360 winding turn.
I'm not sure if this is normal behaviour or not lol.