First of all by looking at the replies nobody knows how to set points, on single point distributor the gap is .017 and the dwell is between 28 and 33 on a dual point distributor each set of points the gap is .017 and the dwell is between 27 and 32 these have to be set separately. witch means you have to disconnect 1 set of points and set the dwell and then do the same with the other set. the dwell on both sets of points together should be between 37 and 42. to accomplish this, you need one of these distributor machines.