Hi all, I dug an old pair of Mitsubishi towers (bought them around '95) out of the attic this evening to test run them in 2-channel stereo. The right speaker has a rather disturbing "scratchy" sound that appears to be coming from the upper of its 2 eight-inch woofers. The black foam around the speaker edges has completely dried and chipped away over the years on the woofers.. Is this a major problem? Should I replace the woofer in question? Or perhaps all 4? Any input will be greatly appreciated!