So I just received my "new" SQ-A from fleabay (so many problems!!!) and I'm trying to make things work, rather than send it back, but I'm getting really frustrated. Are there any special tricks that I should know about when trying to take off the lens, or remove the back, or take off the prism? I have the manual and know what all the little buttons and levers are for, and am trying to follow the instructions, but nothing seems to work. I don't know if it's just me, or the camera ("in perfect working condition"). Before I send off another complaint to the seller, I thought I would ask here first. Thanks.