I recently was given a bottle of powerbond adhesive, a product from Bohning for carbon arrow inserts. So far, this is the best I've ever used for carbon arrows. I've been extremely pleased with not only how strong it holds, but it's very slight flexibility that keeps it from breaking the bond after multiple severe hits like some other adhesives I've tried in the past(slow cure 2 part epoxy, fast cure 2 part, superglues of various natures, goat tuff, low temp hot melt, high temp, and on and on).
It reacts a lot like gorilla glue, and may be the same...though they say it's not. It expands and "foams" slightly as it cures. The guy that gave me the bottle said it was "messy" and didn't like it. If you put too much on, it is very messy...but with a bit of practice, and spartan application instead of covering the parts, it's very "clean". Good applicator bottle and simple instructions.
Highly recommend it if you are looking for something to make carbons that much more dependable.