Here are my answers (for what it's worth!):
(1) Are you actually working to 14mm gauge?
Yes - ish - I have a number of Roy Link's kits, but nowhere to run them at the moment
(2) if so are you using the RCL standard, if not what variation are you
using
I am using Roy Link's standards and Romford 'RP25' with the back-to-back and check gauge (back of one wheel to the outside of the other wheel's flange) 'tweaked' to suit Roy's standards. I have done this by carefully reducing the back of each wheel boss to suit the axle - not easy as I have found a bit of variation in the axles!
(3) What are you modelling
It's a secret - even I don't know but it is likely to be a forrestery line set on the Welsh/English border
(4) Are you on DC or DCC or thinking of the latter
Good old 'Digit'-al operation - I push the controller with my digit (finger).
(5) Be as vague as you choose, but roughly where are you
Up to my neck (as usual) near Gloucester
Regards and Merry Christmas to all,
Robin Edwards