Does any one know how to properly load film into this camera? The 120 spool seems to be a bit bigger that what it can handle(?). I'm hoping it's just me and I'm doing something completely wrong. For those whose not very familiar with this, it's a chinese TLR that also sometimes encarnates as "Chang Cheng" camera. It's considered a crappy camera but can take fairly decent pictures nonetheless. Any info is greatly appreciated!