Has anyone tried this? I poped a rubber band on one of my brackets yesterday during face pulling because i tried to get more pull on the other side which is lagging behind. I'm a bit concerned about the left side and I'd like for it to catch up. I do, however, hardly feel anything on that side while FP unless I use an extra rubber band on that side alone or in some other way extend more force to that side. Anyone thought about this, had the same problem?