Some kind members of this group explained to me that my open-reel tapes
suffered from 'sticky shed' syndrome and gave me links to sites that
explained how to bake tapes. However, most of my tapes are on plastic
hubs, which presumably would melt during baking. Can anyone suggest a
solution to this problem, or point me to someone who would sell me or
lend me some metal hubs that I could use?

thanks in advance.