I took my 2002 S-Type (3.0) into a shop I trust to diagnose major squeaking from rear suspension. They told me the “bushings” in the rear control arms were the source of the noise. They were dry but not worn out. They went on to say the bushings weren’t rubber, like normal bushings. They don’t work on a lot of Jaguars so they don’t have many connections for parts. Any idea were I can get these “bushings” and what might be their real name?