I was able to install mine just fine. The bushings snugged up to the frame and it fits on the endlinks just fine. But after a little while of driving, I noticed that the metal shell for the driver's side bushing was bending and pulling away from the frame and the bushing was loosening up. For some reason, my swaybar is really stressing the driver's side bushing. That makes me wonder if, maybe, I installed it incorrectly. Mine also rubs against the frame a bit, but I think it's only doing that when I really push it (which I do from time to time).
I don't think going to different endlinks would help the problem you described with your bushing(s). It sounds like maybe the metal part of the bushings got bent, same as mine. I hit it with a mallet to flatten it back out and snugged it up again, but it bent again too. You might try that and see if it helps.