$16 Turbo Misplayed a Set

[Roland32]

I dont know if I misplayed this on the flop or the turn, but my initial reaction was of a smaller turn bet? I obviously have a flush draw to worry about.

PokerStars Game #3444937001: Tournament #17090750, Hold'em No Limit - Level II (15/30) - 2005/12/26 - 21:36:47 (ET)
Table '17090750 1' Seat #2 is the button
Seat 1: lazarus59 (4110 in chips)
Seat 2: BCRaider (1320 in chips)
Seat 3: Kjell-Arne (1270 in chips)
Seat 4: Mattymoe13 (1470 in chips) is sitting out
Seat 5: nikkibaby1 (1890 in chips)
Seat 6: Roland (1570 in chips)
Seat 8: SergeAStorm5 (1290 in chips)
Seat 9: pittrerie (580 in chips)
Kjell-Arne: posts small blind 15
Mattymoe13: posts big blind 30
*** HOLE CARDS ***
Dealt to Roland [4h 4c]
nikkibaby1: folds
Roland: raises 60 to 90
SergeAStorm5: calls 90
pittrerie: folds
lazarus59: folds
BCRaider: calls 90
Kjell-Arne: calls 75
Mattymoe13: folds
*** FLOP *** [4d Ts Ad]
Kjell-Arne: checks
Roland: bets 120
SergeAStorm5: calls 120
BCRaider: calls 120
Kjell-Arne: folds
*** TURN *** [4d Ts Ad] [8s]
Roland: bets 420
SergeAStorm5: folds
BCRaider: folds
Roland collected 750 from pot
Roland: doesn't show hand
*** SUMMARY ***
Total pot 750 | Rake 0
Board [4d Ts Ad 8s]
Seat 1: lazarus59 folded before Flop (didn't bet)
Seat 2: BCRaider (button) folded on the Turn
Seat 3: Kjell-Arne (small blind) folded on the Flop
Seat 4: Mattymoe13 (big blind) folded before Flop
Seat 5: nikkibaby1 folded before Flop (didn't bet)
Seat 6: Roland collected (750)
Seat 8: SergeAStorm5 folded on the Turn
Seat 9: pittrerie folded before Flop (didn't bet)