OSPF 2 default routes

Hi,

I have 2 areas, are 0.0.0.0 & area 0.0.0.1

Both have their own internet feeds that are redistributed via OSPF as type-1

Now, I have 1 router that sites between the two. It obviously has routes to both networks.

I would like to control which of the 2 default routes get prefered but for some reason cannot get it to work.

I set the cost of the interface going to area 0.0.0.1 to 1000 and left the cost to area 0.0.0.0 on default 10.

I can see the cost to the each area rise when I make the change but every so often, the ABR changes its default route to point out to the one in the 0.0.0.1

So question, is cost the correct metric to change in this scenario? If it is, why would the route be changig?

If the ABR currently has its default route pointing out to the 0.0.0.1 area, and I disable that network on the ABR, it automatically changes its route back to the route out of 0.0.0.0

any ideas?