Yep! Mechman will recommend you replace your belt. I did .5" shorter so we will see how that works cause I just done it. I did a post about my pulley moving, but I'm not sure if they stay in one place or continues to automatically adjust. So, if you need a good belt and not go through what I went through here is the belt chart for this brand. http://www.veyance.c...il.aspx?id=3128