And finally the news you've all been waiting for. It fixes the restarts !! Here's a link to some photos of the jig and the process along with a screenshot of two of them mining away happily on ProHashing over 8 hours after I restarted them (see the time elapsed since first share submitted).
*nod* Looks pretty simple, they don't have to swap the chips (which is a pain) which is good.
C