Contact Gossamer Gear. They will help you out, I think.
Unfortunatly, with most UL carbon stuff, broken usually means destroyed. I have had real good luck with some, but if there are longish fibers running through it, chances are it actually started to fold up while breaking. This extends the break for 4-6 inches either side of a break. By the time you get some UL aluminum tube inside and a diamond wrap outside (epoxied in both cases) you will have added about 2oz. Not bad, and you could live with it, but, that was NOT why you bought UL poles to begin with. Balance will be off, compared to the other one, with more momentum swinging out. Perhaps a few wraps of tape on the unbroken one will correct it.
Anyway, wrapping the lower 6" or so with a double diamond thread wrap (see rod building,) then a light coating of epoxy over that will prevent a large portion of wear from rocks. This will weigh about a half-3/4oz or so, but well worth it. As prevention against knicks, scratches, and as strengthening the tubing,(again, much like rod building,) this goes a long ways towards reliability. And the extra bit of weight *may* help with your stride. I like a heavier pole because of the kick-out while hiking. It swings easily. Light poles often lack that, though I use a home made 4.75oz one.