My Bronica S2a has just arrived and after a test roll it seems that the focus is a bit out of line due to the aged and deteriorated foam that is supposed to press the ground-glass against the metal frame. I've done some research and replacing it seems pretty approachable even by a rookie like me, but I'm not that eager to start unscrewing things without a service manual. The problem is that I can't find anything on the Internet except some for sale on Ebay etc. I'm on a budget and I'd rather invest the few dollars I have left in films... Does anyone have a service manual for this camera and is willing to share? Thank you!