I bought 5 JBL 2235H off craigslist couple days ago. The seller collected so many 2235H from 15 years ago but never really used them. All units are in great condition with the original JBL cone. Yesterday I tested them with 20Hz signal and I found one issue. All units create a 'click' sound when I increase the volume to some level. I figured out that the foam surround was not glue all the way to the edge of the frame, so when the cone has large movement, the foam surround hits the frame and make some noise.

Is this a big problem? I think I should not hear the click if I put the unit in cabinet and play music with it - the music should cover the small click sound anyway. And I can fix it by re-foaming it. My question is: when I do the refoaming, do I need to apply downward force to the cone to make sure the foam is glue to the very edge of the frame?