I'd contact Thermomix, even if it's a decent amount outside of warranty, and mention Australian Consumer Law. I think they might go above and beyond at the moment after just copping a 4.6milion dollar fine for "for making false or misleading representations and misleading the public"
If they don't come to the party I would think the ACCC would say a $2000 kitchen appliance should last a lot more than the 2yr warranty they come with and after just slapping them with a massive fine I think they would more than likely happily inform Thermomix that they need to repair it under the Australian consumer law, even up to 2-3 years out of warranty given the purchase price. I'd probably neglect to tell them that you have pulled it apart though.