NL400, Overpair with FD, bet/check vs TAG?

[olof86]

Prima Poker skin
No Limit Holdem Ring game
Blinds: $2/$4
6 players
Converter

Pre-flop: (6 players) Hero is CO with :Kh :Kc
2 folds, Hero raises to $16, Button folds, SB calls, BB calls.

Flop: :5h :10h :jh ($48, 3 players)
SB checks, BB checks, Hero bets $40, SB calls, BB folds.

Turn: :10d ($128, 2 players)
SB checks, Hero?


Just checking. Villian seems like a bad TAG, got no history. 100 bb stacks