The CX arrows have the model and size printed on shaft. If you are getting an exagerated arc it sounds like you may be shooting the Terminators. Those are heavy arrows. Look on the arrow and post what model/size you have. If you are shooting under 65 pounds, I have had good luck with the CX Hunter 200's. If you are going to shoot 65 pounds or more, I would suggest the CX 300's or CX Hunter 300's. The Hunters are a little heavier but much lighter than the Terminators.

If you want to use your leftover 125 Thunderheads, do it. They are a great fixed-blade broadhead. You will have a slightly slower arrow but carry more kinetic energy than using a 100 grain tip. If you are going to hunt with a 125 grain broadhead, practice with a 125 grain field tips. The 9/32 field tips fit fine like PABowhntr said.

FOC(Front Of Center) and spine have been talked about in this forum. You can look through past threads or just do a search on the web. You will receive hundreds of results.

The string on your bow is stretching/twisting. You can try twisting the string back or move your string loop around so it faces to the rear. Just make sure that your peep is aligned at full draw or you won't be able to see anything.

Here the address to the Carbon Express website:

http://www.carbonexpressarrows.com/arrows_start.shtml


Post what kind of arrows you are currently shooting and we can further help you out.

Steve