Re: KK line check.
 

I don't think you should fold this.

Most people will think "He's FOS he doesn't have the Q" and will C/R with a 7 or some other PP. This happens quite often.

Re: KK line check.
 

You have to bet that turn. It's a value bet. Getting cred sucks but you have to call down. A lot of players cr mid PPs after that second queen hits putting you on overs or Ax or something. You also gain a read. Full handed I might lay this down against a passive player.