I wonder if anyone has any experience locating a world space in the wasteland?

I have a new world space that I am attempting to locate somewhere near Takoma Park. Now, Takoma Park has cell offsets of -6096 (x) and -6758 (y), so I tried placing my worldspace with offsets near those - and ended up with my worldspace located near Springvale School! In order to get my cell near where I want it, I have to use enormous offsets (in the region of 75000, -25000) that are nothing like the offsets used with other worldspaces. OK, I have my cell located roughly where I want it on the map, but something doesn't seem right - anyone have any experience with this? Does this look right?

There is one unique aspect of the Fallout3 world map that Oblivion did not share - the DC Districts are compressed (on the map). I think the scale is something on the order of 1/3 or 1/4 scale, but I do know that you have to do some funky math (or Bethesda did rather) to get your map marker to show up at roughly where your player would be in DC, but its nothing near the actual scale. The areas outside of DC are normal scale, and the player shows up where it actually is in the wasteland worldspace. I do believe that Takoma is one of the DC districts that is compressed on the real world map, and likely the cause of your troubles here.

Miax

There's a 'world map scale' factor to change the size of the worldspace relative to the wasteland map. Without that, big cells like the Mall and Seward Square would each take up half of DC. I had to set the factor to 0.15 to squeeze my worldspace in where I wanted it!