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6 brand new metal boxes are countersunk into the blockwork walls in the kitchen. The block work walls are then plastered using thistle hardwall base coat and Thistle skim coat.When doing 2nd fix eletrics it is found that one of the screw hole lugs on one of the new metal back boxes has no thread so only one screw instead of two can be used to secure double socket faceplate to the new back box.
Are there any better solutions than digging out the new metal back box, fitting new box and redoing plaster around the replacement box?
Regards
Stephen.