Couple hands, value in river betting these overpairs?

[Rakkad]

Took a small break from my stint in short handed play after starting off breaking even after 20k+ hands at 1/2. Trying to find where I could be leaking bets, or missing them. Thanks for the help.

Pretty predictable player in the BB, will call all the way with any pair.

Party Poker 1/2 Hold'em (6 max, 6 handed)

Preflop: Hero is UTG+1 with K[img]/images/graemlins/heart.gif[/img], K[img]/images/graemlins/spade.gif[/img].
UTG folds, Hero raises, CO folds, Button folds, SB folds, BB calls.

Flop: (4.50 SB) 9[img]/images/graemlins/spade.gif[/img], 7[img]/images/graemlins/spade.gif[/img], Q[img]/images/graemlins/diamond.gif[/img] <font color="blue">(2 players) </font>
BB checks, Hero bets, BB calls.

Turn: (3.25 BB) 5[img]/images/graemlins/heart.gif[/img] <font color="blue">(2 players) </font>
BB checks, Hero bets, BB calls.

River: (5.25 BB) 4[img]/images/graemlins/heart.gif[/img] <font color="blue">(2 players) </font>
BB checks, Hero bets, BB raises, Hero calls.

Final Pot: 9.25 BB

Results in white below: <font color="white">
BB shows Qs 9c (two pair, queens and nines).
Hero shows Kh Ks (one pair, kings).
Outcome: BB wins 9.25 BB. </font>


Wasn't sure if I played this hand too agressively or not. Again, unsure if I should be this river, or take free showdown when ace falls.

Party Poker 1/2 Hold'em (6 max, 6 handed)

Preflop: Hero is UTG+1 with K[img]/images/graemlins/diamond.gif[/img], K[img]/images/graemlins/heart.gif[/img].
UTG calls, Hero raises, CO calls, Button calls, SB folds, BB folds, UTG calls.

Flop: (9.50 SB) J[img]/images/graemlins/club.gif[/img], 7[img]/images/graemlins/diamond.gif[/img], 8[img]/images/graemlins/club.gif[/img] <font color="blue">(4 players) </font>
UTG checks, Hero bets, CO raises, Button calls, UTG calls, Hero 3-bets, CO calls, Button calls, UTG calls.

Turn: (10.75 BB) 4[img]/images/graemlins/heart.gif[/img] <font color="blue">(4 players) </font>
UTG checks, Hero bets, CO calls, Button raises, UTG calls, Hero 3-bets, CO folds, Button calls, UTG calls.

River: (20.75 BB) A[img]/images/graemlins/diamond.gif[/img] <font color="blue">(3 players) </font>
UTG checks, Hero bets, Button folds, UTG calls.

Final Pot: 22.75 BB

Results in white below: <font color="white">
UTG shows Qc Js (one pair, jacks).
Hero shows Kd Kh (one pair, kings).
Outcome: Hero wins 22.75 BB. </font>