2 seater black leather Maralunga - Extremely stiff headrests that won't open  

A picture could help.

this is a picture of a random sofa. same model. the sofa should be able to open like the right hand side headrest the two headrests on my sofa are down and too stiff to open. 

cheers

I see. Interesting. I have no idea what’s going on there but it’s obviously a mechanical issue. As I understand it, they used different methods to achieve the adjustability of the cushion. After 1985 they used a system based on a bicycle chain. Prior to that they used something else. So you‘d have to find out the production year first to get an idea. Have you tried to contact Cassina about it? Or do you have an upholstery shop near you? They probably also know a bit about the Maralunga.

cheers for the response. the digging i've done so far corroborates what you have said. I haven't contacted Cassina or anyone with any potential knowledge. that will be my next step. thanks for your response