I have always shot 30 inch 5575 arrows out of a 65 lb bow and have been able to tune it well. I have been looking at buying some new arrows and noticed that I'm at the upper limit if not over goldtips recommendation for spine. turns out that they recommend a 7595 shaft for a 30 inch arrow. Is this something that goldtip did recently or have I been shooting the wrong arrow for 10 years? I usually have my bow turned down to around 62 lbs so I guess its not an issue but I have been wanting to crank it up to peak(70lbs) and I'm worried I wont get it to tune. anyone have a thought on this?