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I wouldn't use pink grip. The stuff I linked to up the thread is designed for holding bolts etc. in and expands slightly as it dries. Pink grip is pretty much designed to hold skirtings onto walls and can fail spectacularly, as in the skirting decides it wants to move (cup, twist or similar) and is held in place by the pink grip building up tension until the adhesive fails and a length of skirting flies across the room.
I have Pink Grip,I was going to squeeze some in before I put in wall plugs.