I have some that made it thru a house fire,including the one that was IN my VCR when the fire happened,and they STILL play.
That's because I learned to clean the heads on audio cassette machines as a kid,and figured out how to do video players.
I clean them before I play the tape using alcohol and 8" long cotton swabs,and use one of those head cleaner tapes afterwards.
I still have 40 Accu-Stats matches,and a bunch of matches I recorded off the tv.
I lost 60-odd Accu-Stats tapes,and practically everything on tv from '85-'98 in that fire. Classic stuff like the '88 Brunswick World Open (2 matches with Keith),along with the rest of that tournament (QF-F,7 matches total),and the whole '86 Resorts tournament(8 matches total).
Both of which had Jean Balukas in her absolute prime,including the last match she played in competition. Tommy D.