"Digital" and "nuclear" are not nouns.

I had never really though about it before, but after John Mace mentioned it I realized that all of the IT guys at my office do stress the first syllable when using “install” as a noun.

No, I say “installation”, but I’ve heard it the other way. I can’t imagine someone saying “I’ll do the in-STALL tomorrow”. Has to be IN-stall.

I work in IT and I use “install” as a noun all the time. I had to say it outloud a couple of times to catch the difference in pronunciation. Weird.