All of a sudden after a thousand miles my Poly bushes on the rear of my Focus are squeeking away, every single bush was changed, its obvious they have gone dry but is there a quick fix or is it a case of slipping the componants out of position, copper greasing them up and slipping them back which is a pain in the A**e

The grease that came with the bushes was like evo stick, if i use copper grease will this be ok
When i say squeek i mean squeek its is very loud and getting worse