Yeah, on the MFD-51W-10, to be honest, the head assembly looks perfect, and if you gently push it down it goes down, it just doesn't stay down. For the record this drive was out of use for a couple of years before I discovered that it had the problem, so maybe the spring went limp due to being fully extended for a long amount of time. Might be a case to consider inserting a disk into any old style Apple floppy drives that you intend to store for long periods of time...