Supernatural Story Finders

Okay, I give up! I've been trying to find a few Sam/Dean fics for a very long time, and I've had absolutely no joy! Please, please, please can one of you kind people help me?

(1) This is an older fic. It was set immediately post "Asylum" and the two of them had a huge row in the motel room that somehow led to wincest. I can't remember much else, other than it was hurt!Dean and either a one-shot or a 2 parter. It was either on LJ, or the Sam-Dean archive - I can't remember which. I looked through the Asylum tags on this site, but couldn't find it.

(2) Moving forward several years, I'm looking for a post "Sex and Violence" fic in which Dean patches himself up alone in the bathroom, his relationship with Sam so broken that he couldn't or wouldn't ask for help from Sam, but the knife wound is in a really awkward place for him to reach. I remember this one broke me when I read it. Again, I think it was Sam/Dean, but I'm not entirely sure. I do know it was 100% angst!

(3) This one was a 'biting' fic. Again short, and again, an older fic. This one had shades of Pavlov's Dogs, and might even have had "Pavlov" in the title. I can't remember. Sam had this habit of biting Dean on the nape of his neck during sex, and it became so that any bite from Sam there had an immediate effect on Dean. Sam played with this fact while they were going to interview some little old lady. That's all I remember!

(4) Fics dealing with or at least mentioning that scene in "When the Levee Breaks" where Sam and Dean fought, and Sam choked Dean and left him lying hurt on the ground. Dean said some stupid things, I know, and I'm happy to read some fics dealing with this, but I'm particularly interested in the hurt!Dean aspects. I've not really found fics that include this fight - and Sam leaving - as a big part of the reason why Dean doesn't trust Sam anymore - or even the final straw. I know there are far bigger issues out there, such as Sam choosing Ruby over him, the demon blood, Sam's quest to kill Lilith, and of course Sam freeing Lucifer and Dean's own failures, but this fight is important, too, IMHO. Sam/Dean is a bonus, but I don't mind gen, slash or het for this one. Whatever is out there that mentions this fight scene and its consequences.

I really hope someone can help! I'm going quietly insane over here, particularly trying to find the Asylum one! I know I've read it, but I can't for the life of me find the thing anymore....!