Hello, let me state first that I have read all the hemera jamming threads already. I am having a Issue with TPU. I can print a half a benchy then the extruder jambs under the hobb like it is clogged up. However I am able to pull the TPU back out using the tensioner lever clip off where the Hobbs bit down and reinsert and it will go again fine for a while with perfect extrusion. My TPU is rated for 195° to 230° and for me to get any type of decent extrusion from it I have to go up to 240+. I can print petg almost perfectly with it, and pla is great as well. My retraction is set to .4 but I have tried up to 2mm and print speed has been tried from 30mms to 60mms. Also Have adjusted the tension from just about no tension to very tight. When it binds from a Medium amount of tension I can hear the tensioner gear hopping on the other gear as the filament binds up. Hopefully this will be enough information but should anything else be needed please let me know. Thank you for your time and I look forward to a reply.