Paul:
Try using a heat gun first to heat the keytop thereby warming and
loosening the adhesive. If this isn't effective, a hot iron with a wet
washcloth sandwiched between the iron the the keys. Both methods are best
done with a helper so keys can be kept warm with no time lost between
heating and prying the old top off. Carefully done, no damage will be done
to the keys.
Mike Kurta
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