Fourth Place Two Weeks in a Row

I have taken to playing the deepstack on Sunday mornings at the Moose.  I basically "got my money back" the last 2 weeks in a row.  The first week I had 8-8 and got called by A-Q which I had no problem with and I was ahead until the queen hit the river.  It was an easy call for the other player and so it goes.

Last week I was again short stacked when we got down to four players.  Dave raised a small amount  on the button and seeing KQ suited in the small blind I just shoved.  I think he made a very "iffy" call with A-9 offsuit, but it's hard to say with only 4 players left.

The flop brought a queen for me and I was super happy until the dealer brought runners and Dave made a straight.  Great googly moogly.  Fourth place again.  Hindsight - if I had simply called before the flop and shoved on the flop when I hit my queen, I don't believe Dave would have called with ace high nothing.  Who knows?

I really didn't think I had enough chips to simply call however so I guess I made the right play.  Blinds were 2,000-4,000 and I only had 22,000 chips (20,000 after small blind).  I believe Dave had about 30,000.  Any thoughts?