Hey Skeats what brace height & string are you using also are you using the light kit on your chrony some times with out it I get erratic readings ,my bow is with in 1/2 lb draw of you ,but at 30 1/2'', 550 grain mid 180s ,16 strand D97 7 1/4'' brace height , I use a pull threw flight bow type release if I release with a static hold it cost me average 5-15 fps ?