Huntsman and Blackwidow Elite Volume Wheel

I'm having problems with both my Blackwidow Elite and my huntsman elite volume wheels
The Huntsman is stiff and needs force to turn - it feel like it's scraping on something or is wedged up against something .
The Blackwidow elite on the other hand is unpredictable - it jumps from 1-3-6-2-8-5-7 etc ...
Problem is i live in south Africa and bought the huntsman from Amazon and to ship is such a hassle
what if i get a new one and it has other issues ?
so to solve my problem i bought this
https://www.amazon.com/gp/product/B01MV411BR/ref=ppx_yo_dt_b_asin_image_o03_s00?ie=UTF8&psc=1

i'm happy with the keyboards overall and i'm using the high quality volume wheel from Drok so I'll just live with things as they are
Just hope Razer stops cutting corners - like the Shitty cheap volume wheel and the rubber dome media buttons ??
Mechanical keyboards means ALL MECHANICAL SWITCHES - not - ( lets throw in some rubber dome shyte ) to save $4 or less - ( 4 media buttons )