WOW, after he tor the wall he said that he shouldn't have because he thinks is third unmentioned nut that you are talking about. He said he cleaned it but he didn't see anything wrong.
He says he takes that piece off and everything works- he puts the piece back on and it does not work. He tried this twice.Attachment 27322

Attachment 27323

Attachment 27324

Attachment 27325

Hi!! Can some one tell me the name of brand for this kit?? I have a "repo home" w this valve but a need the brand though find the rest of the pieces... thanks

I have one identical, I believe that the model number is PRO5200
http://www.pureproproducts.com/_build/pdf/plg_faucet-tub/PRO5200.pdf
Send email to [email protected] for parts, they still have some.
Good luck