Hello! I have a Risograph RP 3500. My color drum got stuck in the machine, but I was able to pull it out with the drum unlocking code in test mode and a little bit of force. I cannot insert another drum; the drum goes almost all the way in and then stops up against something. The drum locking / unlocking in test mode does nothing to help. When the machine is turned on, it just says to insert a drum. I'm not really sure what to do or if there is another way to have the machine reset everything in its drum chamber to a normal position. Any guidance would be greatly appreciated; I'm new to the RISO world! Thank you.
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