Maybe I am a heathen; but I never bother to remove the old glue. just add some more!
Works for me (at least for the last 25 years)
> Thank You to all that replied to my question. I had some paint remover in
> the garage and decided to try that, it has worked very well! I apply the
> remover to a number of segments, go away for a while then come back and
> wipe off. It has made what was a very laborious job very easy.
> Mike Short,
> Austin Texas.