When buying new bar clamps it is good idea to wax the bars before you start using them. That way errant glue that drips on them will come right off. I didn’t do this on some parallel jaw clamps and they had so much glue on they wouldn’t slide on the bars. It took me 2 hours w/ heat gun and a file card to get all of the glue off on 4 clamps, lesson learned.

Bondo Gaposis