KK makes set and gets donked...

[ajm36]

RAISE THE FLOP!

You should raise the flop.

If I put myself in MP1's shoes I'd look at your Turn raise and know you were slow-playing something. I'd fold right there. MP1 played his hand badly, that doesn't mean you played it correctly.

[Shillx]

Big pot + set = raise the flop

You will rarely be making a mistake if you follow the above advice. In fact I changed my mind...you will never be making a mistake.

*grunch*

I'd raise the flop.