Problem installing Polybronze bushing, Bushing not fitting Options

[skeates]

Hey guys, I've been putting together my set of Elephant Racing bushings for the front control arms, but seem to have run into a bit of a problem...

The bushing went into the front mounts without any problems (only needed the 100-150 lbs of force mentioned in the instructions). However, where they go into the rear mounts the fit is significantly tighter! For one I couldn't start it by hand like the fronts, and it definitely took more more effort on the vice to push in. The bushing seated...mostly, but now I'm noticing a bulge in the red poyl material and the busing won't seat any further into the mount (see pics below). I never measured the interference on the fronts, but I'm seeing somewhere close to 4 one-hundredths interference for the rear. Am I missing something here?

I was thinking about using a torch to gently heat the mount it get it to expand a bit but I am worried that doing so could/will ruin the busing. Anyone else run into this problem before?