So I am only a 27.5"DL. Because of this I have never used a loop. The way I figure it, is if you measure out to 27.5 and you use a loop. You need a 27" DL bow order. I am short enough. I want more speed. Most loops I see look like they add at least 1/2 to 5/8" to DL. Am I not correct in this assessment?