unknown gray caulk of doom

so I'm taking a break today from caulk, and just filled the dumpster and cleaned everything up. there is plenty to do while I figure out how I plan to remove it completely. If I have to, I will strip it off with the most corrosive stuff I can find and just repaint, I have too much else to do to focus so much on caulking! I will use proflex on everything possible, and the next best thing for everything I can't use it on. these days, is it worth switching out he old 40w converter into a newer 50w model? are they more efficient? my budget, while it absolutely is a thing, isn't a huge issue. I've already paid for almost everything I need, and still have some leftover to spare. the picture is of the old one.