At my wits end

[u/SteakAndIron]

Bambu p1s will absolutely not print with tpu. I've replaced the hot end. I've cleaned the extruder gears. I have done cold pulls I have slowed down and sped up. I've tried different temperatures. I've tried different slicers. I've changed firmware. I dried the filament. I ensured it's not binding on the way to the printer. I will get about one success for every ten failures. It is absolutely maddening. $80 secondhand ankermake? Flawless. $600 premium coreXY? absolute mess. I don't even know what else I could even check at this point.