stuart noble wrote:
cj wrote:
Another thing you could try is fitting a larger size plug (once you
remove the old plug)
As already posted the screw trick normally works but you can always
run the drill in again to remove the plug.
You posted using a 6mm bit.
Normally a 5.5mm is used for Red plugs and a 7mm for Brown but if the
plugs came with the shelf they could be any size .
Try your local DIY store for plugs of different sizes.

HTH
CJ


Often you can just whack a smaller plug into the bigger one, which
effectively adds packing without removing the plug

Or fill the hole with CBF and then either ram the plug into that, or
sinply use that as the plug istead!