when i press down any of the non-stabilized keys on the bottom half of the keycap, the bottom side of the slider seems to rub against the housing to an extreme degree. it's got the regular linear switches it came with, but especially when pressing a key gently and carefully, the friction makes it feel like you're overcoming half a dozen tactile bumps. it's actually quite similar to what smith-corona leaf springs feel like if you're familiar with those