I got a really cheap SRT MC-II off of ebay (only $25 and free shipping). The only problem with it is that the focusing screen has a good bit of haze taking up most of the screen on the prism side. That's not big problem since I have an unrepairable one here with a perfectly fine screen I can use. I just don't know how to remove the screens so I can swap them out. Does anybody know how to do this?