Fairly deep KK laydown

[PoppinFresh]

Villain is 24/19(War_Eagle86) but I haven't seen him get out of line or do anything crazy. I've been playing around 25/21, I occasionally 4-bet light although I'm not sure how often villain has seen me do this if at all, and we haven't been tangling. Standard? Any better lines I can take?

Party Poker No-Limit Hold'em, $ BB (5 handed) Hand History Converter Tool from FlopTurnRiver.com (Format: 2+2 Forums)

MP ($1130)
Button ($1663.23)
SB ($1906.50)
BB ($1030)
Hero ($2026.50)

Preflop: Hero is UTG with K[img]/images/graemlins/spade.gif[/img], K[img]/images/graemlins/heart.gif[/img]. SB posts a blind of $5.
<font color="#CC3333">Hero raises to $35</font>, <font color="#666666">2 folds</font>, <font color="#CC3333">SB (poster) raises to $130</font>, <font color="#666666">1 fold</font>, <font color="#CC3333">Hero raises to $400</font>, SB calls $265.

Flop: ($810) 4[img]/images/graemlins/heart.gif[/img], 4[img]/images/graemlins/club.gif[/img], 7[img]/images/graemlins/club.gif[/img] <font color="#0000FF">(2 players)</font>
SB checks, Hero checks.

Turn: ($810) 9[img]/images/graemlins/club.gif[/img] <font color="#0000FF">(2 players)</font>
<font color="#CC3333">SB bets $500</font>, Hero calls $500.

River: ($1810) 8[img]/images/graemlins/spade.gif[/img] <font color="#0000FF">(2 players)</font>
SB calls $1006.50 (All-In), Hero folds.

Final Pot: $2816.50