I have a PDF that was edited in Acrobat 8.0 Professional, and a program that fills out the fields in that PDF and then displays it to the screen. When I open up the unfilled PDF, all the fields are the correct size, and aligned correctly, and once the program fills it out, the fields are wider, and sometimes are moved out of their original location. We are not moving anything around within the program, we are just filling out the fields. Does anyone know what causes this, and how it can be avoided?!