[sambo]

Just got the email Les, thanks a lot. Yes it's somewhat different to the Harrison/CR layout but now at least I know what I'm looking at with the two parts that make up the mount. I guess with the 50mm cut down alum mounts you now have a lower centre of gravity, for what it's worth.

The Harrison is different again, with two box section "arms" that protrude inwards from the rails and sit a few inches lower. Might talk to some owners down here to see how they went about things.

Thanks again for the photos.

Paul