2005 Lincoln Town Car Power Brake Boosters

Ford OEM factory product sqeaked. I replaced the OEM with a new factory ford part. Didn't fix it, still squeaked. I took car back multiple times to ford dealership to fix. They just threw up their hands and said, "its a known problem, we cant fix it". The problem is a bit documented on internet search. So, i tried a different brand, Centric, having nothing to lose but a couple of dollars. Guess what??? Problem solved! No more squeaks! So much for ford factory parts being "the only parts you should use...".