Dan,
ISTR .027 being the magic number. Now I feel better (I couldn't trust the oxygen-powered carbon-based computer under my hair).
Ken,
I thought that too, but I wanted to be pretty close to legal/appropriate.
I think I have some .018, so that will be employed by my BHM Challenger. I'll also keep my eye open for an old spool of .027 for the UKIE.
Thanks much, guys.