Villain is 12/8/3.1 over 320 hands. Hes a well respected 2+2er. He seems pretty positionally aware. Not sure what his image of me is.

PokerStars No-Limit Hold'em, $6.00 BB (8 handed) - Poker-Stars Converter Tool from FlopTurnRiver.com

MP2 ($1137)
CO ($741.10)
Button ($587.75)
SB ($1301.20)
BB ($408.20)
UTG ($1155)
UTG+1 ($975)
Moneyball (MP1) ($600)

Preflop: Moneyball is MP1 with A , K
1 fold, UTG+1 raises to $18, Moneyball calls $18, 1 fold, CO calls $18, 3 folds

I like flatting here the best with almost every hand I would play including AA or KK. This guy has a pretty tight range and I don't want to isolate myself against the very best of that by 3-betting.

Flop: ($63) A , 6 , 6 (3 players)
UTG+1 bets $36, Moneyball calls $36, 1 fold

Mixture between pot control and slowplaying here. With the K of spades in my hand I'm less worried about a spade coming off.

Turn: ($135) J (2 players)
UTG+1 checks, Moneyball bets $88, UTG+1 calls $88

River: ($311) J (2 players)
UTG+1 checks, Moneyball?

I'm not sure if I should bet here or not or how much to bet. I almost always have the best hand, but at the same time if he has something worse a good player isn't going to find alot of worse hands that I would be betting here and pretty much no bluffs.

Raise the flop and hope he gets it in, if you want to pot control do it by checking the turn where you might not have the best hand, bet any non spade <9........as played bet the river...he has the AxQs or AxTs most of the time.

My thoughts exactly, I bet the turn pretty hard here most of the time.