The first is the big intro of the character and it's 5+ minutes. I know it goes in right after Harris is fired for pre-taping the weather. (I just cut that in this evening.)
Right, after he smashes Morris's head into the wall.

The other 2 are a bit harder to figure. One is just Zell and a bunch of others skipping (like 7 seconds).

This is part of a longer montage during Sara's commentary on LA, where she says "Some say LA's a place for the brain dead. . ." It's supposed to come after Ariel and June subathing, SanDeE* in class, and Frank waiting for Trudi.

The other has Zell rocketing in while Harris is getting the morning paper, he talks some jibberish and rockets off.

This comes toward the end, right after the line that ends "a kiss may not be the truth, but it's what we wish were true." The dialogue is as inane as you think:

HARRY ZELL: Goddamn it! I'm working on a deal, this guy wants fifty percent of the overseas. I tell him I can't give him fifty percent of the overseas, I'll look like an idiot.
SIGN: Uh huh. [Zell's car phone rings. He answers it and listens for a moment.]
ZELL: Hello? Dammit! [to sign] I'll come back tomorrow night at five, or else it'll be after eight [he flies off as Harris and Sara pull up to the sign]

I hope the extended freeway sign scene has one of my favorite cut exchanges:

Harris: It's all over. It's all over. YOU got me into this!
Sign: It was the least I could do.
Harris: What do you mean by that?
Sign: At least you are not indifferent.
Harris: It's true, it's true. I am feeling something.

But I'm guessing it will be the sign asking Harris to check out another sign.

Anyway, if you want more script-related specifics, let me know. I am really looking forward to this! Thanks for all the hard work (and then some, since it will be more than expected!).