So here's 2 unforunate hero folds where I'm just wondering if they are ok or if they're too weak-tight...

Hero Fold 1:

SB: $400 (100 bb)
BB: $450 (112.5 bb)
UTG: $190.13 (47.5 bb)
Hero (MP): $441.80 (110.5 bb)
CO: $1,077.42 (269.4 bb)
BTN: $436.57 (109.1 bb)

Preflop: Hero is MP with 2d 2h
UTG folds, Hero raises to $12, 2 folds, SB calls $10, BB folds

Flop: ($28) 2s 5c Jh (2 players)
SB checks, Hero bets $16, SB calls $16

Turn: ($60) 8s (2 players)
SB checks, Hero bets $42, SB raises to $116, Hero calls $74

River: ($292) 3h (2 players)
SB bets $256 and is all-in, Hero folds

Villain is a 31/24 winning reg. After 350 hands he has a 6% flopXR and 20% turnXR although I'm sure those are very skewed given the sample size. I haven't seen him get out of line at all.

Hero Fold 2:

SB: $685.61 (171.4 bb)
BB: $437.40 (109.4 bb)
UTG: $443.55 (110.9 bb)
MP: $429.60 (107.4 bb)
Hero (CO): $400 (100 bb)
BTN: $739.54 (184.9 bb)

Preflop: Hero is CO with Kd Qd
2 folds, Hero raises to $8, BTN calls $8, SB raises to $24, BB folds, Hero calls $16, BTN calls $16

Flop: ($76) 9d 7d 4d (3 players)
SB bets $40, Hero calls $40, BTN calls $40

Turn: ($196) Qh (3 players)
SB checks, Hero bets $118, BTN calls $118, SB folds

River: ($432) 9h (2 players)
Hero checks, BTN bets $557.54 and is all-in, Hero folds

BTN is a 20/12 nit after 2.4k hands. 2.5% 3bet from the BTN and most of his stats are in line with a normal nit's. SB is a 38/27 fish with a 14% 3bet.