i don't know if i should even get into this thread, but here goes.
with the rest down(at rest)draw bow with arrow on rest, time pull cord to pickup shaft with the head 2 1/2 inches in front of shelf. with that done, check timing with the bow at full draw(arrow on rest).look for the space between the cables and the fixed stops on cams. do not draw through the frist cable contact. adj. cables so both cams come to the cables the same. replace and adj stop peg as needed. (sorry, the stop should removed before timing) if the pull cord is short(rest timed early)it will stop bottom cam and hold it out of time thus killing the let off. i hope this makes sense and helps. good luck. jim