Hello all - Hoping for a suggestion...Installed a bar on my handlebars a while back to hold a GoPro or a headlight or both or my phone and Garmin and whatever. No matter how tight I think I get it it still seems to want to "roll" forward. I tried using gaffers tape under the mount to try to provide a little friction to hold it in place and it's better but still moves. (I'm a videographer - gaffers tape can fix almost anything). Anyone had any luck getting one to stay still? Thanks in advance!