PS $22 -- Another JJ Disaster?

Much in the spirit of my earlier JJ post, I present this situation that's a bit different:

- In hindsight, the flop bet seems way too big, in the future, I'd tone that down to 200-220.

- Like last time, my question is the turn. This situation is different as the turn now has resulted in the potential for a number of "made" hands, and this dude could be trapping. Since I basically screamed 'overpair' to him, do I send out a little tester bet and fold/puke to a check raise? Or do you just check this guy down?

- Check behind on river?

As always, thank you for being the plumbers in my SnG life.

PokerStars No-Limit Hold'em Tourney, Big Blind is t20 (9 handed) converter

SB (t1990)
BB (t2300)
UTG (t760)
UTG+1 (t3360)
MP1 (t1450)
MP2 (t610)
MP3 (t90)
CO (t1470)
Hero (t1470)

Preflop: Hero is Button with J[img]/images/graemlins/diamond.gif[/img], J[img]/images/graemlins/heart.gif[/img].
UTG calls t20, <font color="#666666">4 folds</font>, CO calls t20, <font color="#CC3333">Hero raises to t100</font>, <font color="#666666">2 folds</font>, UTG calls t80, CO calls t80.

Flop: (t330) 8[img]/images/graemlins/diamond.gif[/img], 6[img]/images/graemlins/spade.gif[/img], 5[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(3 players)</font>
UTG checks, <font color="#CC3333">CO bets t60</font>, <font color="#CC3333">Hero raises to t390</font>, UTG folds, CO calls t330.

Turn: (t1110) 4[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(2 players)</font>
CO checks, Hero checks.

River: (t1110) T[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(2 players)</font>
CO checks, Hero checks.