1: I shoot a 68" 72# hillstyle longbow hillstyle grip, love the bow, shoots good, but I do notice some string contact with the bow arm about 3 inches from my wrist. wear spot on my armgaurd, the bow is braced from 6 3/8 to 6 1/2. I can shoot without armgaurd but wouldn,t want to do it a long time. Is this normal? 2:The brace height will change from when I first brace it, after shooting I have to rebrace it. I run good fastflight strings. Is this common with a bow of this poundage?