Was too ill to go to work on friday so decided to stay at home and sort out my adf collection.
The disk I had personally dumped that I though was less than 880k and working turned out to be an adz file. doh!
So I had a look at all my adf's and found about 100 that had a filelength of 0 and about 150 which had length <880k. None of these worked
So I now have a new trimmed down but properly sorted TOSEC set.