On a plot, I have replaced x-ticks with text and then rotated them through 90 degrees. When printing to EPS format (top image), the text is centrally justified and crosses the x-axis. When I print to PNG (bottom image), the text is right justified and does not cross the x-axis. Furthermore, the font in the EPS image is incorrect; it should be Garamond but appears to be Courier New. How can I correct these two issues?