I'm not going to waste any more money on this camera by sending it to someone else. I've rebuilt several cameras now and I've never had this kind of problem before. Part of the problem is lack of documentation. I can go online and get a repair manual for just about every other camera but I can't find any really good references other than basics. I know that the issue isn't in the low speeds. I'm trying to get the shutter completely out of the camera now, I figure that if I just reset everything to zero maybe I can get it to work but I can't figure out how to get the last screw out to completely remove the shutter housing from the top.