Bushing trouble

I don't know what to do with those bushing i have boiled them for an hour or longer and they are still hard as a rock,They are the inch and a half in the front the back one work fine but the front i have no idea what to do,Do you think if i put them in the freezer it will draw them up don't like much but enough to piss me off....LOL thanks for any help.....

If you are referring to the front bushings for the leaf springs it helps a lot to open the eye in the spring with a chisel that has a long taper to it.