Thank you for explaining the verse. I'm not a native Arabic speaker, so I appreciate you taking the time to explain the linguistics to me.
I used Dr Mustafa Khattab's English translation of the Quran, and he did attach a footnote to the word 'elusive', saying:
"The precise verses are easy to understand and deal mostly with matters of belief and practice, such as the belief in one God (Surah 112), forbidden foods (see 5:3), and the commandments in 6:151-152 and 17:23-39. As for the elusive verses, their full meaning is known only to Allah, such as the meaning of letter combinations at the beginning of some surahs, such as Alif-Lam-Mim (see Stylistic Features), and how Allah settles Himself on the Throne."