When to fold when reraised on 3rd

[DrewOnTilt]

One thing that I can't get a grip on in Stud Hi is when to fold on 3rd when reraised. I can easily fold when I raise split J's and get reraised by a weak player with a K. When else should I be pitching it?

Example hand:
3 handed
I raise Q [img]/images/graemlins/spade.gif[/img] K [img]/images/graemlins/diamond.gif[/img] J [img]/images/graemlins/club.gif[/img]
A passive player with the Q [img]/images/graemlins/diamond.gif[/img] in the window reraises me
All of my pair and straight cards are live except the Q's.

What's my move?