I had to take the "kisser" out of the bowl because it was causing a bunch of jams where it caused the case to get pressed tightly against it, but the case feeder detects every one of those jams and reverses to correct them. It will go forward and backward until it detects a case fall down the funnel, then it resumes normal operation. I did have a few when I was running it wide open without my Rollsizer attached. I had counted out 1,000 cases and was timing how fast it could colate them, when at the funnel they somehow jammed and the feed plate jumped up over them. I caught one incident on video.
After I fixed the jam I tried putting the kisser back in to help hold the case plate down, but eventually took it back out and hooked my Rollsizer back up and did over 5,000 pieces without a single malfunction. No jams, nothing. There were a few small pieces of orange plastic in the bowl, so I think the 3D printed parts may need a bit of a break-in period.