Questionable call-down

[jrbick]

Villain here is somewhat nutty... raises a lot preflop, plays way too many hands and is normally aggressive postflop... nothing to out of the ordinary but might overplay some hands here and there.

Party Poker 3/6 Hold'em (6 max, 5 handed) FTR converter on zerodivide.cx

Preflop: Hero is SB with A[img]/images/graemlins/heart.gif[/img], T[img]/images/graemlins/heart.gif[/img].
UTG calls, MP calls, <font color="#666666">1 fold</font>, Hero completes, BB checks.

Flop: (4 SB) 4[img]/images/graemlins/spade.gif[/img], A[img]/images/graemlins/club.gif[/img], 5[img]/images/graemlins/club.gif[/img] <font color="#0000FF">(4 players)</font>
<font color="#CC3333">Hero bets</font>, BB folds, <font color="#CC3333">UTG raises</font>, MP calls, <font color="#CC3333">Hero 3-bets</font>, UTG calls, MP calls.

Turn: (6.50 BB) Q[img]/images/graemlins/club.gif[/img] <font color="#0000FF">(3 players)</font>
<font color="#CC3333">Hero bets</font>, <font color="#CC3333">UTG raises</font>, MP folds, Hero calls.

River: (10.50 BB) 8[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(2 players)</font>
Hero checks, <font color="#CC3333">UTG bets</font>, Hero calls.

Final Pot: 12.50 BB

My thoughts are that the flop and turn action ought to really set the alarms off. I know when I make this play that I usually have my opponents crushed. To me it looked like the classic two-pair A4 or A5... I can think of a lot of limping hands from this guy that have me pretty well beat, but I don't want to start getting weak. I also don't want to spew. Good time to fold or is the call-down ok?