Help. Overpairs losing to Sets....again and again

Hi guys,

This is a huge leak in my game at the moment and I think I know what I need to do but need some reassurance.

Lets say I have K K (a common hand I seem to lose big with).

Theres a limped from MP and I raise 4 x BB +1 on the button.

Flop comes:

2 6 9 rainbow.

Now here I am thinking this is a great flop for me right?

So MP player checks and I bet 3/4 pot. MP calls.... hmmmmm.

Is it at this point that I should be thinking...SET!? Maybe not? But what else does he call with ? A 9? 7 8? (Remember I raised PF too)

So lets say the turn comes:

Turn: J.

MP checks again? I bet 3/4 pot again. MP then reraises me!!!

Now should i be thinking SET?! Should I be laying down my kings here?

Maybe and im thinking this is what I should do is Check behind on the turn to negate the chance for anyone to check-raise. Is this an option?

I guess it probably comes down to small hand/small pot, big hand/big pot, but should I really be laying my kings down (or Aces etc) to any sort of aggression?

Now I know what you are probably going to say....that it comes down to read, stack sizes, table dynamics etc and I understand all this, but I would really like a reasonably general answer. Eg, we have just sat down at the table and we both have 100BB stacks.

I seem to lose the plot when facing aggression when I have big overs and not believe my opponents raise. Maybe I don't respect it enough?

For the above example do thing change if he just calls the turn? Do we then check behind on the river fearing the check raise or do we value bet to all hell.

Again, reads are very important I know but whether my opponent is LAG or TAG or passive or whatever I still seem to be stacking off with my overpairs and when I look at my Pokertracker stats for Aces and Kings they are extremely depressing!

Any help/feedback or critisism is appreciated and valuable.

It really depends on level and read. For some players in some situations, this is a leak. For others, it's a cooler and it feels worse because it is emotional.

make a small bet ( half of the pot),to find out where you at. when a other raises you.he must have a set. but looking at flop. it is danger for you or not