When should I have folded these flushes?

[amax]

These hands happen just after another but on different tables, might be noticed in my passive play in the second hand. Is there anytime when I can lay down these hands on these boards (no pair flopped)? Should I've folded the second hand to the 3-bet on turn?

Button is 16/7/1.7

Party Poker 1/2 Hold'em (10 handed) FTR converter on zerodivide.cx

Preflop: Hero is BB with 7[img]/images/graemlins/spade.gif[/img], 4[img]/images/graemlins/spade.gif[/img].
UTG calls, <font color="#666666">3 folds</font>, MP2 calls, <font color="#666666">1 fold</font>, CO calls, Button calls, SB completes, Hero checks.

Flop: (6 SB) 3[img]/images/graemlins/spade.gif[/img], 5[img]/images/graemlins/club.gif[/img], 6[img]/images/graemlins/spade.gif[/img] <font color="#0000FF">(6 players)</font>
SB checks, <font color="#CC3333">Hero bets</font>, UTG folds, MP2 folds, CO calls, Button calls, SB calls.

Turn: (5 BB) A[img]/images/graemlins/spade.gif[/img] <font color="#0000FF">(4 players)</font>
SB checks, <font color="#CC3333">Hero bets</font>, CO calls, <font color="#CC3333">Button raises</font>, SB folds, <font color="#CC3333">Hero 3-bets</font>, CO calls, Button calls.

River: (14 BB) 8[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(3 players)</font>
<font color="#CC3333">Hero bets</font>, CO calls, <font color="#CC3333">Button raises</font>, Hero calls, CO folds.

Final Pot: 19 BB


MP1 is 27/8/1.3

Party Poker 1/2 Hold'em (9 handed)FTR converter on zerodivide.cx

Preflop: Hero is BB with 4[img]/images/graemlins/spade.gif[/img], T[img]/images/graemlins/spade.gif[/img].
<font color="#666666">2 folds</font>, MP1 calls, <font color="#666666">1 fold</font>, MP3 calls, <font color="#666666">1 fold</font>, Button calls, <font color="#666666">1 fold</font>, Hero checks.

Flop: (4.50 SB) J[img]/images/graemlins/diamond.gif[/img], K[img]/images/graemlins/spade.gif[/img], 6[img]/images/graemlins/spade.gif[/img] <font color="#0000FF">(4 players)</font>
Hero checks, MP1 checks, <font color="#CC3333">MP3 bets</font>, Button calls, Hero calls, MP1 calls.

Turn: (4.25 BB) 7[img]/images/graemlins/spade.gif[/img] <font color="#0000FF">(4 players)</font>
Hero checks, MP1 checks, <font color="#CC3333">MP3 bets</font>, Button calls, <font color="#CC3333">Hero raises</font>, <font color="#CC3333">MP1 3-bets</font>, MP3 calls, Button folds, Hero calls.

River: (14.25 BB) 6[img]/images/graemlins/club.gif[/img] <font color="#0000FF">(3 players)</font>
Hero checks, <font color="#CC3333">MP1 bets</font>, <font color="#CC3333">MP3 raises</font>, Hero calls, <font color="#CC3333">MP1 3-bets</font>, MP3 calls, Hero calls.

Final Pot: 23.25 BB