A tale to tell

Oops! I did it again … telling, telling, telling. Many authors will relate on this one: the “show, don’t tell” dilemma. I have been particularly guilty of telling too often, and in my rereading of Book 2 (which, granted, is just in its first set of revisions following a very rough first draft) I see that I have quite the workload ahead of me.
I’m getting better at the showing thing, but I have a lot of fixing to do for Book 2 to eliminate the telling. I don’t know how I put so much of it in there without realizing it, but what’s told is told and I have to un-tell it … somehow.
There’s another problem that I see after looking at my work with recently-critiqued eyes: exposition. Yeah. I got some of that going, too. I took it out of Book 1 (based on said critiques), but I worry that the point isn’t going to get across with the way I took it out. There are things that I feel aren’t explained adequately, major plot points, but I’m at a loss as to how to convey the things without telling and without boring the reader. It’s not something I think beyond my ability to do, but the fact that I can’t figure it out right away is frustrating.
It doesn’t help that I think about other series that I’ve read, and that I know the exposition is often there to quickly explain what happened in the last book, a “Previously, on … ” kind of thing that you see in TV shows, if you will. So it happens in publication all the time, right? So–why am I concerned? I guess I’m trying to predict what issues the publishers will have with the next book, and even though I see this type of thing quite frequently when I’m reading I still envision my publishers’ potential comments, and it is throwing me.
Maybe I need to back off and not worry about the second book for right now. Take some (more) time off from it and mull a bit. I don’t know. I think I’m overthinking.