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I unclogged/unjammed my Rep2, no dissasembly required.

1.get a #6 nickel wound guitar string from the local guitar shop.

  1. heat up the tip with a lighter for approx. 5 seconds.
  2. plunge it in and out of the hole, when you do it correctly, you will feel the churningof the plastic that is obstructing your extruder.
    4.insert the new pla reel and your done.

-note that this works better if you load your plastic in quickly after doing this without waiting much time for the warm up.

hope it helps.