Any help here? This has been a leak for me for quite a while. I play party 50NL, and I cant find a consistent pattern. Here are 3 examples from yesterday. I just dont know how to tell when to let them go. I normally try to look for a ~half-stack showdown but it doesnt work out a lot of the time.

Hand 1. Bad guy is 60/17. I normally reraise a bit more than I did here, but I'm not sure if that would make a difference in this case. I guess I should reraise the flop big. Against a bigger stack I could let it go at that point, but against this guy I think I'm probably AI no matter what so I call and let him lead. If he lets me showdown cheap then I will. Or should I push that flop hard? I essentially gave him a cheap draw.
Party Poker No-Limit Hold'em, $ BB (10 handed) Hand History Converter Tool from FlopTurnRiver.com (Format: FlopTurnRiver)

UTG+1 ($64.31)
UTG+2 ($48.70)
MP1 ($27.75)
MP2 ($33.14)
Hero ($50)
CO ($47.25)
Button ($76.61)
SB ($40.90)
BB ($12.30)
UTG ($7.15)

Preflop: Hero is MP3 with K, K. SB posts a blind of $0.25.
1 fold, UTG+1 calls $0.50, UTG+2 calls $0.50, 1 fold, MP2 raises to $2, Hero raises to $8, 4 folds, UTG+1 folds, UTG+2 folds, MP2 calls $6.

Flop: ($17.75) Q, T, 5 (2 players)
MP2 bets $5, Hero calls $5.

Turn: ($27.75) 9 (2 players)
MP2 bets $7, Hero calls $7.

River: ($41.75) 4 (2 players)
MP2 bets $9, Hero raises to $18, MP2 calls $4.14 (All-In).

Final Pot: $72.89

Results in white below:
MP2 has Kh Jh (straight, king high).
Hero has Kc Ks (one pair, kings).
Outcome: MP2 wins $68.03. Hero wins $4.86.

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Hand 2. I dont have a ton of hands on bad guy(34). He's 50/17 at this point. He was playing decently for being that loose...but that's not many hands.
Party Poker No-Limit Hold'em, $ BB (8 handed) Hand History Converter Tool from FlopTurnRiver.com (Format: FlopTurnRiver)

UTG ($78.94)
UTG+1 ($19)
MP1 ($64.88)
Hero ($50)
CO ($27)
Button ($38.80)
SB ($53.70)
BB ($49)

Preflop: Hero is MP2 with K, K. SB posts a blind of $0.25.
2 folds, MP1 calls $0.50, Hero raises to $2.5, 2 folds, SB (poster) calls $2.25, 1 fold, MP1 calls $2.

Flop: ($8) T, 8, 5 (3 players)
SB checks, MP1 checks, Hero bets $4, SB calls $4, MP1 raises to $8, Hero raises to $17, SB folds, MP1 calls $54.38 (All-In), Hero folds.

Final Pot: $91.38

Results in white below:
No showdown. MP1 wins $91.38.

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Hand 3. I only have 12 hands on the guy, he was 30/23 but went to SD 66% of the time.
Party Poker No-Limit Hold'em, $ BB (8 handed) Hand History Converter Tool from FlopTurnRiver.com (Format: FlopTurnRiver)

MP1 ($44.15)
MP2 ($50.35)
Hero ($110.80)
Button ($137.55)
SB ($60.70)
BB ($8.53)
UTG ($51.01)
UTG+1 ($92.80)

Preflop: Hero is CO with A, A. SB posts a blind of $0.25.
2 folds, MP1 calls $0.50, MP2 raises to $2, Hero raises to $9, 3 folds, MP1 folds, MP2 calls $7.

Flop: ($19.25) Q, 9, 6 (2 players)
MP2 bets $15, Hero calls $101.80 (All-In), MP2 calls $26.35 (All-In).

Turn: ($162.40) 8 (2 players, 2 all-in)

River: ($162.40) J (2 players, 2 all-in)

Final Pot: $162.40

Results in white below:
MP2 has Kd Ks (one pair, kings).
Hero has Ah Ad (one pair, aces).
Outcome: Hero wins $162.40.