I have to agree with the others. Being that old, the limb technology wasn't what it is today. I wouldn't tell you not to shoot carbon arrows, but do your homework to find some comparable in weight to the 2117's or just maybe slightly lighter.

It's not just so simple to say "carbon or aluminum". There are carbon arrows that weigh more than aluminums of like spine and length.

Frankly, my personal opinion? If you have enough aluminums then that's what I'd shoot. Having to shoot a carbon a like weight is not going to achieve anything for you except possibly better durability. There would just not be enough speed gain to justify the cost.

And while you're at it I'd suggest a new string (Dacron or B50). I would assume, having been shooting compounds for 35 years now, that yours has steel cables. Don't worry about them, but change the string.