Yup, Energy Suspension bushings are a pain in the butt. I wouldn't go as far as grinding metal away from the hub. If you have to grind anything away, use some sand paper with a block of wood and take 1/32" off each inner bushing until you can force the control arm in place with just a little elbow grease. I personaly didn't have that much trouble with mine. I just used some thin metal putty knives with grease on them to ease installation. Remember to put on the poly bushing lube, otherwise you will end up with unwanted squeeks from the metal rubbing on the poly bushings (I HATE squeeks!). If you end up squishing most of the poly lube out during assembly and it squeeks, then here is what I did. I used a small phillips screw driver and heated it up cherry red. I then inserted the hot small screw driver into the inner poly bushing (between the control arm and hub), making a small slot in the poly bushing. I then used a toothpick and dipped it in the poly lube, and placed the lube in the little slot that was just made. Then you take the whole assembly and work it back and forth as far as it will go, in both directions. This will smear the lube out evenly between the inner bushings of the control arm and the hub. Viola! You will have no more squeeks. On a side note, I don't think that the small slot (the size of a toothpick) in the inner bushing made any difference in it's function as a bushing. Yes, dirt may get in there, but dirt gets everywhere anyways.
I just read my post and if you think you will have any problems with squeeking, then make a small notch on the inner poly bushing before you put it all together, so you don't have to use the hot screwdriver method.
!M!