Kyhuntertoo,
Just remember to weight the full length of the arrow. If you don't you will change the balance and the spine. If you use weedeater string, glue it into the knock and cut it the length of the arrow. It will stay put. On all of my bows(Tomahawk, Howard Hill, Seguoia and Martin x-200, I find that they shoot best at 9-10 grains of aroow weight/lb of bow weight. On my 50" bows I shoot 450-475 gr. arrows and on my 55" bows I shoot 500-525 grain arrows. I use FF plus string and my slowest arrows are 190 FPS.
BGB