For those of you who have successfully installed poly suspension bushings, did you run into this issue?

Basically, since this bushing is a two-piece and a steel collar, I think there's an air bubble that won't give when I press in the steel collar. I've tried 3-jaw pullers, c-clamps, a vise, and a press. I can't get this bushing further in than the image shows. Any tips?

Basically, since this bushing is a two-piece and a steel collar, I think there's an air bubble that won't give when I press in the steel collar. I've tried 3-jaw pullers, c-clamps, a vise, and a press. I can't get this bushing further in than the image shows. Any tips?
taking too long to mod since '09June '12 COTM'95 AT200
