Doc - thanks for the help on the Saturday GK Quick. Mrs BD usually does this one, but with no proper grid it was more of a challenge!!
I have completed the EV 847 grid, the first time that I have tried, I even managed 30a before the hints were published (probably because there were no unusual words in it) but I am unsure of the wordplay for the following:
12a Does the "ne" relate to outdated?
22a Does the note mean no "t", or am I way off target?
39a Is the stringed instrument a tub(a), and, if so, why?
28d Have an answer which fits the first word, but then I'm lost
The quotation was no problem, I've even seen the play which is probably more than most people have!! As to the rest of it, the hints above might just as well have been in a foreign language.
Finally, with regard to "Three fours" - have you considered the right angled triangle, with sides of three, four and five? Probably a red herring, but you never know!