i installed some KYB AGX shocks a couple years back, and now recently i went over a relatively small bump in the road and now the car makes a bad noise up front when i go over small bumps and/or turn corners. i took the shock apart and the travel seems smooth like it should be, but i found that this bushing seems swelled up or something. it was almost impossible to get the cover off of the shock and its almost impossible to get it back on. did this bushing swell? could this be what my problem is? comments please.