I've been shooting an 07 Tribute that I bought used this summer. It came with smooth mods which didn't feel right for me. I thought it was because I was used to the speed bows and the usual valley they had. I switched out the smooth and put on the speed mods which felt much better. Yesterday I was going to sell the 28" smooth mods when I discovered the reason I didn't like the draw. One was a 2.5, the other was a 3.5 so I had a 29" and a 28" mod on it!