Welcome to the zone. I just broke a gear on my X2 and called several suppliers and they were all back ordered. Just as well because i had been putting off getting the belt drive kit.
So I finally ordered the Steele belt drive and LOVE it ! Very well made and installs very quickly and easily. It's so nice not to hear those stinkin plastic gears anymore. I can actually hear the cutter removing stock and hear the steppers.
I highly recommend forgetting about replacing the gears and upgrade now.
That's my opinion anyway, good luck,