thats the thing, i'm trying to ressurect it on a p1-166s before i put it into the older machine, is it possible that the p1 simply doesn't like the darned thing? I'm not going to spend too much more time with the poor thing, it soon begin life as something else, like it's platters for a mobile......
(edit) Popped it open only to find a very faint line going from the inside to the outside of the drive, deeper towards the inside of the spindle, so this ones gone. Thread can be closed.
*thanks for the tips though*