Homebrew PCBs

I built a mixed smt and through hole kit on a commercial pc board recently 
and installed a header on the wrong side of the board.  The board was thru 
hole plated.  When I tried to unsolder the header with a solder sucker and 
then several passes with solder wick I managed to pull the header out but 2 
of the vias came with it.  The header uses .025" square pins.  The old vias 
would not go back in the hole or back on the pins.

Does anyone know where I can buy a few vias?  I have some larger ones but 
are huge compared to the ones I am looking for.

Can anyone point me to a source for a few of the through hole vias?

Thank you.

Jim Pruitt