Top margin for Chapter 1 different than for subsequent chapters

I’m working on a novel manuscript. I have each chapter as a Scrivener “scene.” When I compile, each scene is a “section.”

If I compile for pdf, and I go to “Choose layout for Section documents,” I choose one that shows page break and beneath that “Chapter One”, and beneath that the chapter text.Then I choose Manuscript format.

Once compiled as a pdf, the Chapter 1 heading is near the top margin of the page, and the text immediately follows. But the headings for the subsequent chapters are about a third down the page, with text immediately following.

How can I make the Chapter 1 spacing the same as the others–starting about a third down the page?

Many thanks.