Forum:+ find rare working?

So last time I checked, this wiki had figured out the + rare find on class mods didn't work for chests. However, has anyone done experiments to find out if they work at all, and how they work if they work at all? Lord knows it wouldn't be the first class mod thing to not work. Also, on a side note, last I heard, some people thought knox's gold increased item find, but most didn't think so. Any more news on that?