Pop-Up Panel Positions

Can anyone offer some helpful hints on how I can have the positions of PMDG 737NG pop-up panels "memorized" for saved flights.I know when loading a new aircraft, this is not possible. However, within a saved flight, panel positions and sizes should be able to be memorized.To make the matter even more curious, certain pop-up panel positions and sizes ARE memorized (specifically the CDU and Throttle panels). But the Radio Stack and Overhead (and Chronometer) pop-ups are not -- however, there sizing IS memorized.I have a two monitor set-up, so everytime I load a flight, I have to move over the Overhead and Radio Stack to the second monitor. But the Throttle and CDU are always memorized in their correct location on the second monitor.I have a feeling this requires some tweaking of the panel.cfg file, specifically the window_pos and wondow_size parameters. But I cannot determine the differenc between the panels that do memorize their size AND position, and those that only memorize their size.Thank you in advance for everyone's helpful replies.Troy