RE: Broadhead Tune (calling Big Country)
You know, you might have to move your nocking point down if you have maxed out your rest adjustment. I know its a pain and you might have to get a shop to do it. But it sounds as if you have max out the adjustment. I tie my own in and even I hate to drop my d-loop.
Your spined well. I would'n't worry too much about that.
Spine generally causes windage issues. Not up and down.