Desperate times call for desperate measures so I got out the absolutely not environmentally friendly, nor skin friendly, nor lung friendly adhesive remover. The first attempt with this was to brush a little on and let it sit a minute and see if the caulk would come off. Just the tiniest bit did come off (thank you baby Jesus, maybe I'm onto something). So I employed the Tim Taylor methodology. I created a soaking vessel out of a piece of flashing. I had to dam it up at both ends so the stuff wouldn't leak out onto the floor and I used my hot glue gun for that, then I put the drip cap in and poured the adhesive remover in the vessel to cover the caulk. Here is a photo of my creation.
I wanted to let it soak in there for an hour or so and went off to take a shower and get ready for work. I didn't want to get my work clothes all icky so decided to check out the progress in my robe. I went into the garage in my robe and slipper and donned my super heavy duty rubber glove (quite a sight I'm sure) and when I leaned over the tie on my robe must have dipped into the remover and brushed up against my newly shaven leg...did I mention that the adhesive remover is not skin friendly. I won't repeat what words came spewing forth as I ran into the house to wash this off, and while I ran the robe tie brushed up against the other leg...more words I won't repeat were heard. The good news is that the soaking worked pretty well. I decided to soak another one and leave it all day and it worked even better.
Here are the drip caps. Top: Right off the trailer. Middle: The caulk has been removed, it has been bathed in an acid wash, and has been straightened. Bottom: Cleaned and ready to be polished. Quite a difference!
Here is another window that has been cleaned and is ready to be put back together.
And this is the interior window trim. One before cleaning and one after.