Ohio Scientific floppy progress

So I built the PC to 8 inch floppy converter and got the software working (see other message). I have tested four of the six drives I have and... THEY ALL WORK! Not only that, but they all agree with each other. That is, a disk formatted and written on one drive will read on any other drive. Can I assume that this means they are all properly aligned? I find this hard to believe as two of the drives were mishandled during shipping so badly that they sheared off their mounting bolts and a few of the components on one of the electronics boards were damaged (more in next message). Finally, where is write protection enforced? There is a signal from the drive to the controller. Is that just for the controllers information or does the controller enforce the protection? If the controller or software is bad can a drive be forced to write to a protected disk? Bill Sudbrink