Ive used methylated spirits to get rid of glue, I've used Turpentine as well. One of them works well on Metal (Turps) while the other (Methyl) works better for plastic. I use them to strip paint and the glue melts too. Only super glue and PVA glue though. Acetone (Nail polish remover) is the best paint stripper I've ever used, only for metal models though, it melts everything else brilliantly, you could try applying that to key joints and areas, but I'd be super careful with it.
As mentioned, if its plastic glue your boned.