I just got a Cr337 the other day, for playing with on 3-d’s. It has 60lb limbs (maxes at 63LB) and my draw is 28.5. I have checked on GT ultra lites. Would that be a good choice to go lighter with, to try to get some more speed? Right now I’m shooting GT XT hunters at I think 8.9 gr per inch, and the ultra lites are 7.4 I think. All so what about an 85 grain points with them?