Oh, it's all good! Hmm...a bit of a hard one to advise. I think I am a bit guilty of being overly expository with my dialogue at times, although perhaps more in the narration. Anyway, most of the time I try to envision how the scene would look like if it was in a film, or whether it was me and my friends talking about it, and if it doesn't sound like something they'd realistically say, I adjust it to sound more like how I'd picture...well, us saying it.
In any case, cool!
Maybe...another thing that can be useful is to just write the text out, even if it is expository and clunky, and then when it's done have a look at it and go "Hmm, that bit doesn't work, but this bit does, and I can fix the first bit by tweaking this line..." and so on. You could always send me the scene in question via notes and I could have a look over it and offer some feedback?