On another note, you can get rid of the plastic noise as well. Get some Silicone Oil in a spray can with a precise nozzle, like Ballistol (brand).

Cautiously spray the joints, hinges, wherever you suspect the noise. Apply movement to help the oil crawl into the cracks. This completely eliminated the noise on all my plastic headphones forever.

Just be super careful, silicone oil is super slippery and next to impossible to wipe up, dose with care and cover all surfaces with newspaper etc.