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Yeah, but "to run by/past" is more of a colloquialism anyway (which are actually the most difficult thing in every language since they follow as few rules as possible). "To discuss with" or something similar would be as accurate, and "with" would probably almost always be the correct preposition with them, as it would mean both parties were involved. "To speak to" would also be correct (in addition to "to speak with", but the prepostion "to" usually implies one-way action; I think "to speak to" meaning a discussion is also something of a colloquialism.

Sorry. I don't know why I'm going on and on about this.

As Phil said (thanks, Phil, BTW!), you are the Grammar Police, you are expected to talk about those things.

I should learn to avoid colloquialism unless I am quite certain about them. I knew "to discuss with", "to talk to", "to speak with", but this particular idiom somehow sounded cooler in the context...