When do you slow down against an overaggressive?

[tech]

MP1 is overly aggressive and a frequent bluffer. However, the table knows this all too well, and so he gets paid off very well when he does hit a hand. With that in mind, how would you play this?

Party Poker 3/6 Hold'em (9 handed) converter (http://www.selachian.com/tools/bisonconverter/hhconverter.cgi)

Preflop: Hero is SB with A/images/graemlins/spade.gif, A/images/graemlins/club.gif.
UTG calls, <font color="666666">1 fold</font>, MP1 calls, <font color="666666">2 folds</font>, CO calls, <font color="666666">1 fold</font>, <font color="CC3333">Hero raises</font>, BB calls, UTG calls, MP1 calls, CO calls.

Flop: (10 SB) 9/images/graemlins/heart.gif, 4/images/graemlins/heart.gif, 3/images/graemlins/spade.gif <font color="blue">(5 players)</font>
<font color="CC3333">Hero bets</font>, BB calls, UTG folds, <font color="CC3333">MP1 raises</font>, CO folds, <font color="CC3333">Hero 3-bets</font>, BB folds, <font color="CC3333">MP1 caps</font>, Hero calls.

Turn: (9.50 BB) J/images/graemlins/spade.gif <font color="blue">(2 players)</font>
<font color="CC3333">Hero bets</font>, <font color="CC3333">MP1 raises</font>, Hero calls.

River: (13.50 BB) T/images/graemlins/spade.gif <font color="blue">(2 players)</font>
Hero checks, <font color="CC3333">MP1 bets</font>, Hero calls.

Final Pot: 15.50 BB

Results in white below: <font color="white">
MP1 shows 5c 9c (one pair, nines).
Hero shows As Ac (one pair, aces).
Outcome: Hero wins 15.50 BB. </font>

[Yeknom58]

A cap on the flop generally means nothing to me from a LAG. When the flop is pretty draw heavy it means even less. I would definitely 3 bet the turn or CR the turn. Then if he caps/3 bet I would check call river.