Hi Quisling,
5d - Your parsing of 2,6 makes much more sense. I didn't know that definition of the 6 so had convinced myself that my 7 could
sort of mean "hit" and of course "big" would make it the 'No.1'.
Honestly though, I was never entirely happy with my take on it and just assumed it was another example of the looseness I took to be JH's in 2d,