Hand 1: Should this have been a flop push over reraise?

Stack sizes:
Hero: $12.70
UTG+1: $11.65
CO: $33.45
Button: $16.45
SB: $8.95
BB: $3.45

Pre-flop: (6 players) Hero is UTG with A J
Hero raises to $0.4, UTG+1 folds, CO raises to $0.7, 3 folds, Hero calls $0.3 (pot was $1.25).

Flop: 2 T 5 ($1.55, 2 players)
Hero bets $1, CO raises to $2, Hero calls $1 (pot was $4.55).

Turn: Q ($5.55, 2 players)
Hero checks, CO bets $5.55, Hero raises all-in $10, CO calls.

River: 7 ($25.55, 1 player + 1 all-in - Main pot: $25.55)

Results:
Final pot: $25.55


Hand 2: Similar situation, but here I essentially push over his flop min-raise because he's a short-stack. If he wasn't a short stack, what's the play?

Stack sizes:
UTG: $10.15
UTG+1: $10
CO: $3.80
Button: $11
Hero: $9.90
BB: $6

Pre-flop: (6 players) Hero is SB with Q A
2 folds, CO calls, Button calls, Hero raises to $0.6, BB folds, CO calls, Button folds.

Flop: J 8 6 ($1.4, 2 players)
Hero bets $1, CO raises to $2, Hero raises to $4, CO calls all-in $3.2, Hero calls $0.2 (pot was $7.6).

Turn: 3 ($11.8, 1 player + 1 all-in - Main pot: $11.8)


River: 3 ($11.8, 1 player + 1 all-in - Main pot: $11.8)


Results:
Final pot: $11.8



Hand 3: Villain is 54/33/2.9 over 50 hands. Is this spewy?

Stack sizes:
UTG: $1.05
UTG+1: $11.05
CO: $15.95
Hero: $9.70
SB: $14.20
BB: $18.25

Pre-flop: (6 players) Hero is Button with A J
2 folds, CO raises to $0.3, Hero raises to $1, 2 folds, CO calls.

Flop: K 3 Q ($2.15, 2 players)
CO bets $2.15, Hero raises all-in $8.7