I just bought a NEW Sony MPF920-E and switched the ID # by breaking off the 0 Ohm resistor and bridging the SEL 0 jumper (as this one has no switch). By the way this is as technical as I know how to talk! So this did not work for me.
i had several old emax drives i have been testing them over the last few weeks and can confirm that all have misaligment issues
i tested each one with disk written from a new slim floppy in one emax machine then loaded it into a test machine with each floppy drive and all failed to load the new disk
so i did more experiments by formatting the drives in the emu with the old drives and they formated the disk and would load from that drive but when i tried loading the disk into one of the other old drives and the new slim floppy i got errors
as i promised these drives for free to members i dont think its fair on you to send them as you creating a disk on a pc might not work and would be a waste of postal money on your part and wastage of both our times youy can get them realigned by a floppy repairers but its cheaper to buy a nos slim floppy for £5-10 and a slim floppy adapter and do the mods yourself
of get a hxc as they work if you have no scsi
if you have scsi i do recommend a cf scsi card drive either a pcd-47 pcd-50 pcd-60 or a acard 7720uw and a hpt swap drive as it loads fast and 35 banks at hand