When i go to make a file and pick the settings i want the output file will have a differant data rate than what is listed in the settings....what gives?

for example data rate will be set to 25000 but the file studio makes data rate will be 35000.

using the lastest patch still does it.

to get a data rate of 25000 i have to set it in studio to 20000. then the output file will be what i want 25000.