After attending a recent seminar, we were shown various different positions to which you can pull a knee bar from. Since this seminar, my knee bar's have greatly improved, and im amazed at just how many positions you can pull a kneebar from. I've been seeing them from side control, from closed guard, and in the odd scramble for a dominant position. Most of the luck comes from when a sparring partner leave's they're leg unguarded whilst they try stack me when im trying for the armbar. The problem is though, is sometimes I find it difficult to generate the power to crank the kneebar on once im in position (it normally takes a few seconds of repositioning); and im just interested in your personal experiances with the knee bar. Weather you can provide me with any tips, techniques or recommendations on the correct positioning to increase the leverage of the kneebar.