just curious to what you mean? I recently got a GMK set thats fresh run and the spacebar shined in no time we are talking less then a month. I just wondering if thats what you meant with drop in quality. I am kinda at the moment just contributing it to... my skin but the JTK set have had for a few months has zero shine and has been used more overall.
Which GMK set?
My Sky Dolch had some poorly aligned (for GMK) legends. HFuse I cannot say because I hated GMK HFuse and its horrible contrast on the mods (SP's color palette for DSA HFuse is far better). Carbon is a good example as font thicknesses are all over the place (I like to draw comparison between the nubbed and the regular F keys I have, one is bold and the other looks like the "light" version of the font). My JTK WoB seems kinda oily off the bat so there's not too much of a difference between new and worn.
The current OG G80-3000 doubleshots I'm typing on are actually flawless for something that is decades old. Shiny of course, but that is part of the GMK appeal. Same with the French G80-3700 keys I have (sadly the board is gone). They are not shiny but I can't pick out a single thing wrong with the keys. Made in January 2001. I also have a Classic Retro set from GMK that is obviously new(er) but holds to a stellar level of perfection.
F, WASD, Q and E wore shiny on my Sky Dolch within 2 months. It's what ABS does. At least it's easy to wash off the skin oils and retain the attractive, smooth shine with GMK, as opposed to mass-market and OEM ABS that becomes horrible and disgusting in both aesthetics and feel after worn.