Well, finished getting the strings off, and the old tuning pins out. It really needs some cleaning, too. There was some obvious spillage on the soundboard under the plate. It looks like soda or juice. The process of removing the stings is kinda dangerous because they become very sharp. They got me a couple times. I had to bandage of some "battle wounds" before I could get back to work!
I pulled the plate so I can get better access to cleaning the soundboard and bridge. It also helps cleaning the plate, too, while it's on the bench. I have a 2-ton hoist to help lift. Those plates are pretty heavy!