Hi! Thanks for asking! It's not really what this comm is for, I'm afraid - we have quite a set format - but I'm sure you could post a query at doctorwho (or dwfiction maybe, whichever is most appropriate). That has a far larger following than this comm anyway & a better chance of success! (Don't worry too much if it's quiet - people are usually still around. It's just how Dreamwidth rolls these days, excepting comms with regular mod-run activities (like this one), but that doesn't mean the general ones aren't still the best bet for a query.)

Plus, if you haven't already looked, there's always calufrax's comprehensive tags, which might lead you in the right direction, if the fic you are looking for was on the Teaspoon. Good luck! <3