Thanks for the quick reply Ken.
Yes, I did try the insulation tape but handle still turns. Might try a thin double sided tape and see if this works.
The filing I did only straightened out the clamp edges on the outside of the handle bar where the threaded bolts lock the two halves together. If there was a raised section on the inside of the clamp it seems to have been worn away over time so I may have to have a look at a new set of clamps.
Many thanks
Pete
