Squeeky (new) leaf springs

[nillle]

Hi I've just installed a Grab-a-trak suspension kit from Mustangsplus, including mid-eye rear leaf springs. But now the new springs have started to squeek! Really annoying! I dont know if it is the rubber or the springs, but I would guess the rubber bushings. And it's both sides
Is there some trick when installing new springs to make them quiet? Like putting some kind of grease on?

 

[xoxbxfx]

i believe if they are poly bushings you are supposed to grease them before installing.

 

[nillle]

Yeah I forgot to mention that these leaf springs have rubber bushings..