10/20 TP Calldown/Valuedown?

[Jman28]

Villain is 27/20/3.6. I figure he has a set or draw here almost every time. He could play like this with air, and he could do it with TP. He can't have an overpair because of the pf action.

What do you think about the flop and turn?

Party Poker No-Limit Hold'em (NL$2000) <font color="#0000FF">(6 handed)</font> link

Hero ($10156.60)
Button ($7908.48)
SB ($1249.66)
BB ($4208.00)
UTG ($2030.68)

Preflop: Hero is CO with T[img]/images/graemlins/spade.gif[/img], Q[img]/images/graemlins/spade.gif[/img].
<font color="#666666">1 folds</font>, <font color="#CC3333">Hero raises to $70.00</font>, Button calls $70.00, <font color="#666666">1 folds</font>, BB calls $50.00.

Flop: ($220.00) 7[img]/images/graemlins/diamond.gif[/img], T[img]/images/graemlins/heart.gif[/img], 5[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(3 players)</font>
BB checks, <font color="#CC3333">Hero bets $155.00</font>, Button folds, <font color="#CC3333">BB raises to $400.00</font>, Hero calls $245.00.

Turn: ($1020.00) 7[img]/images/graemlins/club.gif[/img] <font color="#0000FF">(2 players)</font>
<font color="#CC3333">BB bets $725.00</font>, Hero calls $725.00.

River: ($2470.00) Q[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(2 players)</font>

What do you do if...

Scenario A: Villain checks.

Scenario B: Villain bets $1850.