The only thing in your query letter that should be the exception to the rule is your writing.
No exception to "a query letter should be one page or about 250 words"
No exception to "include the first 3-5 pages of the novel."
No exception to "tell me what the novel is about in your query."
No exception to "one query = one project"
I can not emphasize enough that when I see this kind of "exceptional work" I just say no. I am not investing time in one-to-one email coaching on how to query. That's the purpose of this blog and QueryShark.
Sometimes you can't see your own mistakes. If you're getting a lot of "no" or a lot of silence (no response means no) take yourself to a writers conference and instead of pitching at a pitch session, get some feedback on your query letter.
I'm looking for exceptional writing....not writers who think they are exceptions.