Just a quick update on the handlebar problem.
On closer inspection of the clamp and handle bar I noticed that the metal is very smooth and looks similar to metal that gets work hardened with continual use. This was evident even after I had give both surfaces a light sanding.
I decided to try a very course emery paper and rough up the handle bar plus the inside of the clamp until I noticed a good coverage of sanding marks and got back to new metal. This had an immediate positive result so I will spend a bit more time on "roughing up" both surfaces.
I am fairly sure now that once the handle bar is painted and, if I give the inside of the clamp a coat of etch primer, this will probably help add more "grip" and stop the slipping completely.
cheers
Pete
