The other thing you probably need to do is decide which broadhead you are going to shoot and stick with it.

Why exactly Dan and Todd are suggesting not to walk back with broadheads.... I'm not sure? But coming from them I'd be inclined to blindly agree. Personally I have always walk backed with FPs.... then walked back with BHs and had my groups hit together. I can tell you though that it is largely luck to have a FP, a long ferreled mech and a fixed blade all group together..... most of the people that claim this are either liars or bad enough shots that their 6" groups at 20 yards make them true prophets of bow tuning. Thats not the case with Dan or Todd of course, but when some redneck jumps on the net and talks about how great he is.... well.... draw your own conclusions.