Our hopper is incompatible with inverted disks. They don't seem to settle right in the bottom. The shooter will shoot them, its just a matter of moving the disk the .5 inch from the hopper to the shooting wheel. We can sometimes accomplish this by running into the wall at a high rate of speed (how we cleared most jams actually) XD
This, fortunately, didn't happen too many times. We only human fed. The single time it did happen was during a practice match when we wanted to see what happened.
Edit: Obligatory 300th post edit
