Hi! I've been thinking about getting an eye level prism finder with a meter for my Hassy 500 c/m. There are a couple things that confuse me, though... :confused: * The descriptions of some that I've seen at KEH say that the finder cannot be used with an accu-mat screen... does this mean that I must remove the screen and get a different screen, or just remove the screen? * I'd like to get one with a meter built in...does anyone have one of these? How does it work? Do you have to remove it to change the back? Thanks for your help!