PLO50 KKxx floptopset facer lorteriver spot

hader det her riverspot. villain spiller 27/10/0,6 og 3better aldrig (over 60 hænder, efter session).
synes i lignende spots altid at villain har bagdørsflushen her når han shover river. et set checker mange bare bag her. i hvert fald på PLO50. men foretrækker i i stedet bare selv at shove river?

***** History for hand R5-182070996-198 *****
Start hand: Sun Oct 09 11:24:12 CEST 2011
Table: Charkow [182070996] (POT_LIMIT OMAHA_HI $0.50/$0.50, Real money)
Button: seat 8
Players in round: 5
Seat 1: Wojtaspolakk ($118.34)
Seat 2: HERO ($49.49)
Seat 8: dieselstoree ($48.50)
Seat 9: -Butcher- ($56.26)
Seat 10: SirLauge ($129.89)
-Butcher- posts big blind ($0.50)
SirLauge posts big blind ($0.50)
---
Dealing pocket cards
Dealing to HERO: [K♦, K♣, 7♥, Q♣]
Wojtaspolakk folds
HERO raises $2 to $2
dieselstoree calls $2
-Butcher- calls $1.50
SirLauge folds
--- Dealing flop [9♣, 4♠, K♥] POT 6,5$
-Butcher- checks
HERO bets $5
dieselstoree calls $5
-Butcher- folds
--- Dealing turn [2♠] POT 16,5$
HERO bets $14
dieselstoree calls $14
--- Dealing river [6♠] POT 44,5$
HERO ?? (27,50$ eff. stack left)

Villian shover vel alt der har os slået og checker alt bag ved som vi slår og ja folder ikke topset i det her spot, så mos for valur..