Just got my new Invasion!!!...So that meant I had to re-flecth and change nocks. It's all how you look, right?? To get the right color I went from CE Factory nocks to some Bohning nocks I had in the box. They are significantly tighter on the string. Might just be new string serving and new nocks... but they are much tighter and drop me 4 or 5 inches at 60 yards. How tight is too tight and what is the best way to loosen these up a bit?