Hi we have a dripping tap and have old taps with a red & green plug (like a tiddly wink) in the top of the tap which we assume you have to remove to be able to get to the screw which undoes the top replace the washer, but we have tried everything to try to remove it, we have tried with scissors and a knife but it won't budge, all that happens is that bits of it are chipping off, anyone have any ideas how to remove it?
Thanks
Thanks