Send me your current head unit; the part with the servos and camera. I will send you a replacement that upgrades you to Revision 2. Revision 1 units can be identified by a curved brass path, and a single rifle/pistol (labeled top) servo. If your unit has a serial number prior to 0008, you have a Revision 1 unit.
Revision 2 increases sorting speed up to 1 per second. The straight brass path accommodates larger calibers, and reduces jamming.