Usually shoot GT's 35/55 with 50gr. brass inserts and 125 gr. tip. 50 lb. @ 27" bow. My shop was out of GT's so I bought some Carbonwood Vapor arrows in the 2000 series. My question is since I don't have a spine tester does anyone know if the spine is close or not. Carbonwoods are lighter and I'm guessing spine is less. I can't get them to fly as well as the GT's unless my release is perfect. What do you think? I ordered some different weight field points to start experimenting.