It is perfectly in line with the surface text to say John went out 'in the spirit and power of Elijah' because he was Elijah reincarnated. There is nothing in the surface text of Luke 1:17 that explains your 'confidently chucking surface text apparently without reservation' for Matt 17:12.
As Nicodemus found, Jesus was in the business of getting people to look beyond the surface text.
The words "perfectly" and "nothing" don't fit. I see the argument, and I am not afraid of admitting a problem with the surface text. At a minimum, I have a decent argument.
As for "reservations," I think the surface text in places is analogous to the "This is my body" text, where there is little in the immediate portion of the text to give you interpreteive guidance. That has at times bothered me. In fact, I would prefer a more clearly written passage that doesn't require cross-reference, but I have solved the problem with the Mt. reference and I will wait for another time for God to tell my why his syntactical construction is better than mine. Between the synoptic witnesses, this is easy to resolve. I am not sure why that is such a problem or why this verse in isolation is useful to argue against a literal use of scripture elsewhere.
While I am at it, let's go back to the OP. Jesus told commanded the sea to be calm literally and it happened. Therefore, can't I say that everything else in scripture is presumptively literal, including everything in the OP? Obviously you are not going to accept that logic, so why is this literalness of the Elijah verse so persuasive?
Do YECs have areas where the surface text is a little dim regarding interpretive keys? Yes. We have a few ideas on some of them, but we don't have our arms all the way around some of the basis for interpretting things like "This is my body."
You may also wish to look very specifically at the language of Jesus. He says,
Mat 11:13
For all the prophets and the law prophesied until John.
Mat 11:14
And if ye will receive [it], this is Elias, which was for to come.
Mat 11:15
He that hath ears to hear, let him hear.
Quite frankly, Jesus apparently has anticipated certain critical methods and rejected them, while placing the onus upon us to seek clarity by having a spirit that can receive the real meaning. As far as interpretive guidelines in the text, this should stand out as not only very clear, but alarming for those who make an inappropriate use of this verse. Again, I am not holier than anyone here, nor am I smarter, nor would being smarter be of any real significance. But, there is a lesson in this text for those who have ears to hear it.