I use a lot of third-party plug-ins and extensions, but recently it's become so many (especially when I have a lot of comps open), that I can't reach the plugins at the lower end of the alphabet because the window is too tall and gets cut off below my monitor.
I believe the problem is caused by using two monitors at differing resolutions: Monitor 2, which is my tools monitor on the left side, is 1920x1080, and Monitor 1, which is my Composition monitor, is 2560x1440. I believe After Effects is reading that both monitors are 2560x1440 since that's my main monitor. I'd rather not make Monitor 2 my main monitor for various reasons, so I'm looking for an alternate solution.
Is there a way to either A) add the drop down menus to both monitor windows, or B) make it so that AE understands the monitor the dropdown menu is on is only 1920x1080.
Not really. If you really use that many scripts, you might consider using one of the launcher palettes fund on AEScripts.com, but otherwise I don't think there's a good way to handle this other than buying another monitor with matching resolution.