QQ on A-flop vs weird guy (5max)

[YesMehFriend]

Villain was something like 51/12/1.5 (but small sample size at the time the hand was played). He made some strange plays prior to this hand. First he c/r flop and turn hu with a passive guy when he had air. Second he sometimes c/c flpd TPGK hands on all streets but 3bets MPNK from time to time.
This guy seems to be quite unpredictable.

SB is a loose passive (~40/0) guy who might calldown with anything.

Should hero calldown hu, should he calldown with sb around? Should he fold the turn?


Limit Holdem Ring game
Limit: $0.50/$1
5 players
Converter

Pre-flop: (5 players) Hero is CO with Q[img]/images/graemlins/spade.gif[/img] Q[img]/images/graemlins/club.gif[/img]
UTG folds, <font color="#cc0000">Hero raises</font>, Button folds, SB calls, BB calls.

Flop: 7[img]/images/graemlins/spade.gif[/img] 9[img]/images/graemlins/spade.gif[/img] A[img]/images/graemlins/club.gif[/img] (6SB, 3 players)
SB checks, BB checks, <font color="#cc0000">Hero bets</font>, SB calls, <font color="#cc0000">BB raises</font>, Hero calls, SB calls.

Turn: 5[img]/images/graemlins/heart.gif[/img] (6BB, 3 players)
SB checks, <font color="#cc0000">BB bets</font>, Hero ...