On Sun, 10 Jan 2010, Philip Pemberton wrote:
I'll strip it again and have another go. But I
wouldn't be at all
surprised if the upper head has been wrecked -- the loading mechanism
jammed a while ago. I stripped it, re-lubricated the sliders and
reassembled it, but caught the top head when I was putting the top plate
(with the pin that opens the disc shutter) back in.
The head that's having issues appears to be "side 0" if that means
anything (my copy of the ECMA 3.5in floppy standards is "missing" ATM,
and I can't remember if that's the upper or lower head).
Unless you install it on edge or upside down, the lower head is #0, and
the upper head is #1 (or #1/#2, A/B, front/back, . . . )