When bending the round durablock the sand paper bunches up. Or if I leave the paper flat I can’t hold onto the paper. I’m sure there’s away to do this but I’m having trouble…Durablock makes an 11" round sanding block that works very for curved panels. They also have a Teardrop shaped block https://www.dura-block.com/11-Tear-Drop-Dura-Block--1-Piece--AF4406_p_26.html that I like as well for getting into those tight spots.