The draw length of the bow is 29", I am not sure of the size of the CX arrows I have, but they are Terminator Select 6075. They were recommended to me by the supplier. Can I tell what size the arrow is by looking at it?

Assuming: 29" draw length
CX Terminator Select 6075 arrows
65 lbs

Would 125 grain tips work? I have some left over Thunderhead tips that just need new blades and would prefer to use them if they will work well. Will 125 grain tips slow my arrow speed down vs. 100 grain? I won't use my old broadheads if they're the wrong weight.

PABowhntr, if you wouldn't mind, could you define FOC balance and spine or point me to a place that does? Thanks a lot!

One more thing- I had my bow set up by the shop I bought it from. They put on a release loop for additional length (my draw is actually around 30"). When the string is in the idle position (not drawn), the loop faces the arrow rest. So in order for me to clamp the release on it, I need to twist the string about 180 degrees. When I first picked up the bow it was not like this, but after about 10 rounds it twisted away. Any tips on this? Thanks again!

Edit: I just checked, and I was able to twist the loop so it faces the right way, but the peep I have is still facing the wrong way at idle. Seems like the string twisted. Looks like the I will have to go back to the shop AGAIN to fix a problem.