I think your right. They didn't give a strong answer on using the lites and I am not going to take a chance on using them with my TR. They work good in the Yukon with the 150 lb pull though. I have thought about using the carbon arrows but to be honest I really don't know if there is much of an advantage with using them. If they weight about 430 grains with the head that makes them about the same as the aluminum arrows. That means there should not be any difference in speed so what is the advantage?