There is a dedicated thread for the Bury Metro National in the Nationals forum, here:
http://www.oople.com/forums/forumdisplay.php?f=31
Might be worth a read. I was reserve 24, but I have moved to around 21 or so I think. There is always 'a chance' of getting in on the morning, especially if there is a spot of rain. It's not entirely likely though I have to say.