Originally Posted by Angelnorth
Try some gentle heat (your embossing tool or a hairdryer) on the back of the paper the stamp is stuck to. If you can get a corner to lift that way then you can take over with some heavy breathing
Seriously, breathe out through your mouth into the little gap and keep peeling gently and breathing some more. The combination of moisture and warmth works on many of these adhesives.
Thank you for the tip. I just tried it on 5 different types of stamps with mostly good results. Patience is the key (guess who doesn't have much) as it takes going slowly and repeating the heating process. Some left little annoying scraps along the edge, but heating and pulling removed them with much care. Most were still quite sticky making storage difficult, so will now do this as I need the stamps. At least the stamps come out usable, which is the goal. Thanks again.