Wow. Tough one.
My mind says throw it away but if I were sitting with you I believe I would have called it. I guess I'm no help at all.
Alright, this is what I put them on:
MP1 - I put him on a draw to the nut flush or two pair with a draw to a boat. He's got the K

and something like offsuit J or T if he's drawing to his flush, and he's got a lower pp than you if he's drawing to the boat.
CO - He's got a flush. My best guess is he's holding J

T
