@Lurch.
Well, now I feel better that it's not just me!
Wonder what the problem is. Normally kipper's stuff is iron-clad reliable.
Not sure, tried it on two A500 plus machines and a rev6 board so three A500s can't be wrong.
Tried cleaning everything also, most of the errors I was getting was hinting at a kickstart ROM problem. I purchased a new 3.1 kickstart from Amigakit same deal.
Anyway they are sitting on the shelf, possibly sell them on and someone else might have better luck :-/