These two hands are from an MTT. I was considering posting it in the MTT section, but it seems it would drown in NLHE posts, so I hope it's alright if I put it here. This is the early/mid stages of the tourney so there are no ICM consideration or anything like that. I just want to know if there's anything I could have done differently in these spots. I wouldn't play this any differently in a shallow stack cash game.

I had a bad run of cards for the first 60 hands or so of the tourney and had a very, very tight image at the table. Seat 1 and 2 were also playing tight, with less than 10 percent PFR and around 15 VPIP in the small sample size I had so far. I'm MBraathen/seat 5 in the hand samples.

PokerStars Hand #137299793548: Tournament #1257112358, €2.00+€0.20 EUR Omaha Pot Limit - Level X (100/200) - 2015/06/27 23:26:15 CET [2015/06/27 17:26:15 ET]
Table '1257112358 3' 6-max Seat #3 is the button
Seat 1: DrSaid (8940 in chips)
Seat 2: kefiracka (10630 in chips)
Seat 3: surfer aek21 (9526 in chips)
Seat 4: Mr.Zzzed (10501 in chips)
Seat 5: MBraathen (9164 in chips)
Seat 6: sukramt (4449 in chips)
Mr.Zzzed: posts small blind 100
MBraathen: posts big blind 200
* HOLE CARDS
Dealt to MBraathen [Jc Jh Kd Td]
sukramt: folds
DrSaid: raises 200 to 400
kefiracka: folds
surfer aek21: calls 400
Mr.Zzzed: calls 300
MBraathen: calls 200
FLOP [7h Ah Js]
Mr.Zzzed: checks
MBraathen: bets 985
DrSaid: raises 3570 to 4555
surfer aek21: folds
Mr.Zzzed: folds
MBraathen: folds
Uncalled bet (3570) returned to DrSaid
DrSaid collected 3570 from pot
SUMMARY *
Total pot 3570 | Rake 0
Board [7h Ah Js]
Seat 1: DrSaid collected (3570)
Seat 2: kefiracka folded before Flop (didn't bet)
Seat 3: surfer aek21 (button) folded on the Flop
Seat 4: Mr.Zzzed (small blind) folded on the Flop
Seat 5: MBraathen (big blind) folded on the Flop
Seat 6: sukramt folded before Flop (didn't bet)

My line of thought was that because the only time seat 1 had raised and showed down a hand was when he had weak aces. Therefore I considered checking on the flop, but I just felt that if I put a bet in, he would have to raise the pot if he had aces because of the flush draw on the board in a four-way pot. So the plan was to get value from the two other players (seat 4 was extremely loose, getting it in light), and fold to a big raise from 1, which is what I did.

I think that was fine, but a couple of hands later...

PokerStars Hand #137299926213: Tournament #1257112358, €2.00+€0.20 EUR Omaha Pot Limit - Level XI (125/250) - 2015/06/27 23:29:06 CET [2015/06/27 17:29:06 ET]
Table '1257112358 3' 6-max Seat #5 is the button
Seat 1: DrSaid (11125 in chips)
Seat 2: kefiracka (10630 in chips)
Seat 3: surfer aek21 (9501 in chips)
Seat 4: Mr.Zzzed (10101 in chips)
Seat 5: MBraathen (7654 in chips)
Seat 6: sukramt (4199 in chips)
sukramt: posts small blind 125
DrSaid: posts big blind 250
* HOLE CARDS
Dealt to MBraathen [2s Kd Kh Jd]
kefiracka: raises 250 to 500
surfer aek21: folds
Mr.Zzzed: folds
MBraathen: calls 500
sukramt: folds
DrSaid: calls 250
FLOP [Jc Ks Tc]
DrSaid: checks
kefiracka: bets 750
MBraathen: calls 750
DrSaid: folds
TURN [Jc Ks Tc] [5d]
kefiracka: checks
MBraathen: bets 1785
kefiracka: raises 6695 to 8480
MBraathen: folds
Uncalled bet (6695) returned to kefiracka
kefiracka collected 6695 from pot
kefiracka: doesn't show hand
SUMMARY *
Total pot 6695 | Rake 0
Board [Jc Ks Tc 5d]
Seat 1: DrSaid (big blind) folded on the Flop
Seat 2: kefiracka collected (6695)
Seat 3: surfer aek21 folded before Flop (didn't bet)
Seat 4: Mr.Zzzed folded before Flop (didn't bet)
Seat 5: MBraathen (button) folded on the Turn
Seat 6: sukramt (small blind) folded before Flop

This one was a bit tougher for me. I haven't played that much PLO, so folding top set was hard. Because I block kings, jacks and there is a ten on the board, won't my opponents (in a three-way pot) have a lot of aces and queens? I also have no clubs in my hand, so that could add a bit of of equity to my opponent's hands. Also his willingness to check-raise on the turn after my call on the flop seems a lot more like strength than a bluff. Of course some crazy players at this low stakes level could shove AAxx with two clubs here, this guy had been playing tight so far.

I just felt like a total knit after playing so few hands in this tourney and folding two big sets in just a few hands. But am I correct to fold against tight players here? Against the super-loose gamblers who play like 70/25 (there are a lot of them), I would not fold. Also, is there anything else I could have done differently pre-flop or on any street prior to folding? Any feedback is appreciated!