Hi i have put some 7.5mm TandG with 5mm batons on my dininig room wall , i have a twin electic socket that as a metal box fitted in the wall . I have cut the TandG to fit,however the socket is now set back inside the TandG i would like to bring it forward so it is sitting flush , not sure how to do this . i know if i bring the metal box forward 10 mm or so it will be flush with the panels , just cannot get my head round it at the moment on the best way to do this ,could anyone please help. Thanks