I have had so many difficult situations that I am going out of my mind. This one is a real pain. For some reason, my screws change to a default size. I am not sure if it is from something I do while trying to make my assembly confgis behave or something else. Not all configs get wacky screw sizes. If anyone would care to comment...is this really a good product or. Am I correct in thinking it has a lot of problems and behaves poorly in large assemblies?