Thirdly, {maS SaqmeH Qu’} is ungrammatical because you can’t put a verb in the middle of a noun-noun possessive construction.

Says who? SaqmeH Qu' is a noun phrase, and noun phrases can count as the "noun" parts of a noun-noun construction. Are you saying that if I have a pe'meH taj cutting knife, I can't talk about the jonwI' pe'meH taj engineer's cutting knife?

Here's another unambiguous counterexample:

loS... qIb HeHDaq, 'u' SepmeyDaq Sovbe'lu'bogh lenglu'meH He ghoSlu'bogh retlhDaq 'oHtaH.
It waits... on the edge of the galaxy, beside a passage to unknown regions of the universe (SkyBox 99)

The interesting part is He ghoSlu'bogh retlhDaq beside a passage, next to a way which one follows. Here you have clearly have He ghoSlu'bogh passage, way which one follows modifying retlhDaq at the area next to, where a verb comes between the component nouns.

And of course there's the infamous romuluSngan Sambogh 'ej HoHbogh nejwI' Romulan hunter-killer probe, a device made by Romulans, not one which hunts and kills Romulans. A noun-noun construction where one of the component noun phrases is Sambogh 'ej HoHbogh nejwI'. Clearly, you can put a lot of non-nouns between terms in a noun-noun construction.

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SuStel
http://trimboli.name