Yeah thanks I figured that much out. But if you know the Cusco set up there is no adjustment to pull the bar tight and then lock it. As far as I can see you fit it remove the bolt, screw the adjustment in, guesstimate how tight it is and fit the bolt again. However it will be only as tight as much as you can hold the brace by hand and fit the bolt.
Anyway I have it sorted now.
Thanks all!!