On the Shen-Hao the back has a screw sticking out of the top and bottom of the frame. This is fit into a slot on a spring and hold. To remove the back you need to pull both the top and the bottom spring back at the same time and slide the frame out. On the GV you just push on the arms and the frame easily slips out. Also the graphlock slides on mine loosen up and then drop down in the way of the film holder (I think putting my dark cloth on causes this). I have tightened them now, so that problem is reduced, but now they are a bit stiff to use for their intended purpose.
Originally Posted by mobtown_4x5
It is still a great camera, and I would buy it again. But if you think you will use the graphlock slides alot, I would consider other options.