I am trying to adjust the initial scale for a map. So far it always appears on the page at too great a scale. How do I adjust this?

My fruitless attempts so far have been:

1. After dragging the widget on to the page I set the map up with all its place markers and to the right scale.
2. I click on the link icon and highlight the field headed "Past HTML to embed in web site".
3. I click on insert at the bottom of the window, wait for a bit and the map appears at the wrong scale. It is still at the wrong scale when it is uploaded to the site.

I must be missing something. What is it?

Nick