Stuck glue...

… or part actually. Not sure if this is the right board, but. I have a head light, two of the them actually, the two on the front of the M3 Stuart, and I need to unglue them. I believe I use the Testors liquid cement.
I need to take them out to drill out the lights and put in new lens’s.

Anyone know a simple, if any, way of loosening this glue?

TIA

I havent tried it on testors glue (or styrene glue) But there is a product call Un-Cure which is a CA glue de gluer. I think you can also try some nail polish remover, but that would be pretty tuff for the position its in.