mzeller Hi, I've got a traps (modeled a single mesh to span both scapula and torso part) with two fibres painted for each section and two curves + LOAs. Both fibres work well when excited manually. But when adding a LOA I'm only getting a result on the long fibre, not the short one (see image). The curve for the short one is positioned to produce good length reduction on the pictured head back pose, so I'm not sure why the LOA doesn't cause any excitatoin. I've tried raising pos sens. to 5 and 10 even. No change.