Assuming the op is right handed, then an extreme nock right is a stiff arrow. If the op is left handed, then he has a weak arrow. If the op is a new shooter with very poor form and a very poor release, then the op is wasting his/her time trying to bareshaft anything. The op didn't state what his/her draw length is. If the op really needs a 30" arrow because of a long draw length, then a 1916 w/a 100 or a 125 grain head would be better IMHO. The Gamemaster is a bow that really benefits from an elevated rest and it's easy to tune a stiff arrow to that bow if you are using an elevated rest.
LGN, Have you tried group tuning with fletched arrows and bare shafts? That is called the Planing Method. Using that method of tuning, you DO NOT worry about shaft angle. You are only concerned with where your bare shafts and fletched arrows land in relation to each other. I would post a great link to a great website with great tuning info but I am not sure if I am allowed to do it on this Site. John