Okay, what I really need is some advice rather than smug forumites suggesting that I shouldn't have bought Avids in the first place...
Just bled my rear brake as it was a bit spongy. During the last bit - when I'm removing air from the master cylinder and pressurising the system I could hear air being pulled in under vacuum and when I'm trying to pressurise the system I'm getting fluid pi$$ing out from the base of the lever.
I'm guessing a seal has been dislodged/broken/was always crap.
Any advise on pulling the lever apart and fixing it?