Kevin Brady wrote:
At the risk of a further display of inexperience, doe the PTFE tape around a
bib tap thread fitting 'gunk' it up, meaning that I would not then be able
to unscrew and refix. It's just that this will govern whether I do this part
of the work sooner or later in the list.


No, you'll be able to unscrew it with no problems.


--
Grunff