About 80% of the time when I try to print a PDF, or even to a printer for that matter, the printing scale changes on me. If I have several views to print from one drawing I have to tell it the same scale over and over; it won't keep the same scale as the most recent print. Is there a setting I don't know about?
Check the Misc tab of the Preferences dialog. If you have this option checked, the current Plot Scale will be saved and recalled with GTVs.
Dave