so I bought an old acoustic 106 cabinet today that had tons of cabinet buzz from loose hardware but otherwise sounded ok. the speakers are original. look like the cts's I had in my old tuck-n-roll kustom. and, with all the background noise from the loose hardware, no initial indications of any issues with the speakers. I finally got all the hardware and other bits tight and realized that there are some (a handful) of fine cracks in one of the speakers. not in the paper part of the cone but in the gummy area that mounts the cone to the outer part of the frame, out near the edge. this creates a very mild buzz on the e (open and 12th fret only). I am not expecting this to get any better with playing and I have two gigs coming up this weekend... the other speaker is great. and I do like how the cabinet sounds. any advice? (aside from don't buy 40 year old gear...) is there a quick fix that will hold these little tears or am I looking at major speaker surgery?