Switches feel weird

[Mando772004]

hello guys so i recently noticed this but some of the switches on my keyboard feel really uncomfortable compared to like the W key and its honestly frustrating because i only had this keyboard for like 6 months.Now i do live in a very dusty environment but why would dust affect certain switches and the others not.Also when i take of the keycap of any of the uncomfortable switches i try to test the switch and switch feels just fine its just when i put the keycap back on it feels very uncomfortable i even tried replacing the keycaps like i tried replacing the w key with the f9 key for example and it still felt weird and i dont know what to do? what could this be and is there a solution for it?

 

I use corsair k70 rapidfire cherry mx speed silver switches