I have the feeling that the problem isn't the extruder but the feeder mechanism...? It probably need to be tighten which is very easy to do. It might be a good idea make a video with audio of your problem and post a link.
Are you near Boston Mass? You could bring the printer by my house if you are.
If you really did ruin a core I'd be happy to buy it off you - I have parts to repair cores and all the USA stores seem to be sold out of cores right now.
Please post more details. There are so many things that can go wrong and I have no hints about your specific problems.
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DidierKlein 729
Hi and welcome to the community.
Just to let you know i deleted the second post on this issue (no need to have answers on two differents posts).
Regarding your issues, could you be more specific?
What are your printing parameters? Your filament?
I see that you clogged on of the cores... have you tried to clean it (atomic method?)
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