I always thought I was quit good at wrenching. But I am stumped. I just purchased a set of V&H double slash down rounds. I have changed many sets of mufflers in the past but when I got to my 2011 Tri glide I for the life of me can't figure out how to get the stock mufflers off. I can't get a wrench at to bolt closest to the back of the bike. Am I missing something?????