How to - remove hornby mk3 coach glazing

[Noel]

What is the easiest way of removing the glazing from a hornby mk3 coach prior to respray in a way that doesn't destroy the glazing. No point reinventing wheels.

This is more a question for somebody like @Richie who's probably resprayed more mk3 coache than popeye has eaten tins of spinach.

Thanks in advance.

[Noel]

Solved, left coach body on a window cil in direct warm sunlight for an hour and the windows popped out by hand breaking the glue bond. Thanks to those to gave advice on RMI FB and RMweb. The heating tip worked a treat. There is no way I was going to mask 24 windows individually, impossible anyway to do accurately.