This is also true of the adhesive holding the splice-tape to the audio tape. I got a box full of 1/4" home-recorded tape a few years ago, and the splices were falling apart on the ones I looked at. The actual material on the tape seemed to be intact, however.
Unfortunately, I've come to find out that everything degrades with age eventually.
Well, that's why were here I guess; to keep things in working order and to learn to repair things that weren't necessarily meant to be repaired.
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