If there is no backing nut on the tap, it is likely that the tap has a reducing thread as fitted to the 2"cap PBs.Inside of the barrel is flared in with a hole ....dunno if it's right. ..
What a load of cobblers. :laugh:Hi!
Many years ago, when Woolworths shops were a series of display counters with assistants to serve you (no self-service then), one assistant told me that people would steal one seg from a card of ten