A word appearing as ᴱQ. kalar “lettuce” in Early Qenya Phonology of the 1920s derived from primitive ᴱ✶karase (PE14/70), where the final s became z and then r, after which the medial r dissimilated to l.
Neo-Quenya: The dissimilations in later Quenya were different, with the medial r preventing the z from becoming r and instead dissimilating it back to s (PE19/73). As such, I would adapt this word as ᴺQ. caras “lettuce” for purposes of Neo-Quenya, which also has the advantage of differentiating it from Q. calar “lamp”. Note that the stem for this word would also be caras- rather than the usual carar- due to the same dissimulative forces.
A word appearing as ᴱQ. letinwesse “constellation” in the Qenya Lexicon of the 1910s with initial element ᴱQ. le “with” (QL/52), along with ᴱQ. tinwe “star” and the abstract noun suffix ᴱQ. -sse.
Neo-Quenya: Since all these elements survived in later iterations of Quenya with basically the same meanings, I think ᴺQ. letinwessë can be used as-is in Neo-Quenya despite its age.