So I have a 2nd hand copy of Axonn that was initially incomplete, and I noticed that according to the Bricklink it had certain PLG parts that I may have had in FS. Now maybe the original owner just replaced missing parts with FS parts from the Toa Nuva or something, but looking at other inventories there's slight variation like this part actually in FS, including BrickOwl, which has several of the silver parts in alternate groups of FS and PLG. So maybe despite Bricklink not listing it, Axonn had alternate releases of the silvers?
Also I may have a problem distinguishing PLG and certain FS that's like of cheaper production quality or something. Is it the mold patterns in the silver or something that can differentiate the two?