Q.G., The main problem I think is clearance. First the sliding plastic clip that is supposed to lock it all together fits behind the strap, next to the body. Due to the camera lug being square the clip doesn't rotate so you have to work right next to the body. Its all just very tight and fiddly. Looking at the picture you posted of the original strap I see there is no locking device, thats whats been added that makes it all tougher. You can clearly see this part on the new strap in the pictures I posted.