Saxonfig,
I think that you keeping that figlet, was a wise decision.
As you said, one should pinch (energy sucking) figlets from (known) young fig plants,
but maybe-not from unkown-figs, - b/c some more info can be quickly learned.
Two things may happen:
(a) the fruit ripens; then without any reasonable doubt, the fig is of the Common type.
or, more likely
(b) the fruit drops; then although it may point to it needing caprification, at this stage,
it is meaningless - very young fig plants are known to self-abort figlets for no apparent reason.
Thanks for all your trialing work...