Hi, seen your post and when i shot a mathews i called mathews with the same question. on your bow with a 29 draw length #1 will be the longest and #3 will shorten the draw, mathews told me the the string didnt have to be on the same post as the cable, that way you can shorten it 1/4 inch at a time, i hope this helps you and being your looking to go from 29 to 28 just put the string and cable on the #3 post