i have worked in tv, developing systems for archive restoration for many years.
if you have valuable sticky tapes i suggest you try and contact a lical video archivist,
there are other tricks than just baking that can help - old tapes can present complex
problems.
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there was a sticky valuable rolling stones 24 track master tape i heard of. it was sent
for analysis, and they discovered the stickiness was “vodka and coke” :-).
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-Steve