TPTK, Maniac causing problems?

[Roadstar]

Did I play this right here? Can I fold this anywhere?


Any pointers greatly appreciated!

Converter missing some action, I filled in some of it myself.
Party Poker (9 max, 9 handed) converter

Preflop: Hero is UTG with Q[img]/images/graemlins/diamond.gif[/img], A[img]/images/graemlins/spade.gif[/img].
<font color="#666666">6 folds</font>.
I raise, MP3 calls (PT 68% VPIP, 5% PFR, aggressive post flop (i.e. bets mid/bottom pair), button calls (maniac, 75% VPIP 50% PFR, auto raises post flop)
Flop: Q[img]/images/graemlins/spade.gif[/img], T[img]/images/graemlins/heart.gif[/img], 6[img]/images/graemlins/spade.gif[/img] <font color="#0000FF">(3 players)</font>
I bet, MP3 calls, button raises, I 3 bet, MP3 calls, button caps, I call, MP3 calls

Turn: 7[img]/images/graemlins/spade.gif[/img] <font color="#0000FF">(3 players)</font>
I bet, MP3 raises, button 3 bets, I call, MP3 caps, button folds, I call.

I still think I'm good but I'm surprised by MP3's raise, maniac's 3 bet doesn't mean anything, I still call because I picked up the nut flush draw. MP3 caps (I know I'm behind now), button folds (I knew he had nothing).

River: 3[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(2 players)</font>


Hero checks, MP3 bets, Hero Calls.

Do you check fold here? The pot is 21BB so is check/call ok?

Final Pot: