Honestly dude you're going to get used to the better audio. It sucks and you'll always look back to that bliss but there ain't much you can do lol. Like people say, listen to the music, not the hardware or else you'll get pulled into the trap searching for the better stuff. Which depending who you are could be fine or not be fine

Welcome to the audiophile world, now you know why people can have 30+ pairs of headphones (you know who you are)

Yeah spend 2 weeks listening to something else lol. And for the moisture, probably not it lol

ZMF ZMF ZMF Makes pads highly recommend if you want something reputable and longer lasting. They use a different material. Go ahead and look up their pads on youtube and they'll give you Frequency Response stuff. I think DMS did a video on the 650 as well but it'll be slightly different.

I wanna know where you get the headband and yoke kit