+ 1 for this Comment.. FOR SURE, you need to clean all transport-rollers / heads, etc, with the proper fluid (denatured Alcohol is fine, but Acetone is a NO..) / nice, clean 'chamois-swabs', *before* and *between* tape-rips... They're probably practically 'dripping' the oxide, if they've been in storage that long...
..Also, DON'T USE the "cleaning tapes", I've been warned from My Elders that know..Good cleaning-info resource: http://www.palsite.com/pcat_hclean.html
.02
j