One thing I did not mention was the fletching. If you do not have enough off-set to your fletching it will become unstable at distance, especially with a broadhead. Number your arrows and see if it is two arrows in particular that are going stupid on you.
BTW, get a G5 ASD and square all front inserts. If it does not fix your problem it will give you finer accuracy. I rarely see a broadhead not wobble with out being squared.
http://g5outdoors.com/#sec_asdtool
Fletching is offset but I also have wraps on my bolts, I've had them for years and never had any trouble. I limit my shots to 25 yards and under while hunting.
Will this ASD work on brass inserts?
I'm in a wheelchair, paralyzed from the chest down with no use of my fingers so I have to get someone to check all this stuff that you guys are telling me.
Thanks so much for the help and advice.
Barry