Yes, sounds familiar. The idea there of course is you are trying to use ACD to partial out real strength and weakness from that of the overall market. When the market is strong, all strong stocks look the same. But stocks making and confirming A downs don't. If the market keeps going higher it's likely the stock will stay weak and if the market rolls over, the weak stock will get killed. Same on the upside, market is weak and stock is strong confirming an A up, the market then bounces in the afternoon and the strong stock goes parabolic.