Change Width of Bubble in SimpleMap

I’ve been having huge problems with this too. It wasn’t always this way, but now the bubble text is about 40 pixels wide. It’s impossible for anyone to read and there’s a scroll bar there too taking up half the space.

I’ve been digging around in the code trying to find a bit of CSS or HTML that I might be able to adjust, but I haven’t had any luck figuring it out.

It doesn’t seem like there are a lot of responses to these questions though, so I’m not very hopeful that this will get answered.

In what file do you edit the bubbles html? Would also like to ad an extra image.
Got some mods working, but not at all the way I’d like it.