Printing with enough heat to cause duct droop? Simple answer is to replace your PETG duct with one of these heat tolerant ASA / ABS ducts.
Save yourself the embarrassment and frustration of the dreaded duct droop, grab one of these EVA TriHorn ducts, lovingly printed by Amanda herself.
Black version is printed in ASA (Slight more heat tolerant than ABS).
Red version is much higher heat tolerant than the standard PETG version and looks very sporty on your EVA hot end.