Hi, I try everything I found on the internet about kobra X and TPU. I did slower profile, I also print few test of ordinary cylinder. These tests turn out good, but next print was fail. Everytime I turn on print with TPU, Iam ready with allen key, because I know, that will clogg. I try print with PTFE, without PTFE, I leave TPU filament in dryer and then start to print, I try some tensioner to take filament tension during print and retraction and still everything bad. Does anybody have some sugestions?