Logo in header

I have inserted a logo into my header on the left side, however, the logo starts about 3/4 of an inch in from the left side of the page. the left margin is set to 0 and the text starts about 1/4 of an inch from the left edge. Is it possible to move the logo any farther to the left?

I do not want to put the logo directly on the report - the report is a pivot table and the page fields are in the top left corner. I often change these fields, so I would have to move the logo every time if I put the logo on top of the page fields. I have the fonts and borders of the field selections in white so the do not show on the printed page and there is no problem with them showing through the logo. I think I am stuck using the custom header box, but it will not move the logo all the way to the left margin.