KK gets very messy, AK hand 3handed one AI

[coming_up]

Hand1: http://www.pokerhand.org/?1729522
FI: 13/10/3
I have not played alot with this player but he seems cinda donky tight? Hate to fold KK here but maby I should against this guy. I was planing on showing the turn but then my brain shut down when the worst card ever hit... Any ideeas on how to play against a nit that mixes up his play?

Hand2: http://www.pokerhand.org/?1729622
FI:25/13/2
I have absolutely no info about this palyer more then his stats. Have not seen him around before so i guess he is not a regular.