I crack a canopy on one of my planes. I pulled it off to replace it and have a ring of dried canopy glue on the fuslage. Is there something that will remove it so I can start fresh with the new canopy?

It would be easier to answer this if you gave us a hint as to what kind of glue

It's the white Canopy glue...looks alot like elmers glue.

Canopy Adheasive {like RC 56} will soften if soaked with water. I use a wet rag for about an hour, then it peels off like RTV silicone.