About that other problem I was having:
It seems the large 5 inch floppy drive is a simple problem case scenario of, the metal that holds the disk into place, has simply come out of position, and so, I think I may either glue it back on, or muck around with some tape, for a temporary fix.
Meanwhile Iv been way too busy doing floppies via xcopy, to try and get some 3 1/4" floppies into the scheme, just in case my 5" one really does fail me completely one day.
Man, got heaps to go, something like 2000 floppies.
Insanity.
As for the PSU, thanks for your tips, Ive asked a friend if he needs his old PSU from his x86 hardware, and so I have found a donor.
Cheers.