Stuck/sticky keys

[Lynx_Carpathica]

Hello guys, I have a Tai-Hao keyboard with Aruz switches. It works fine, but some of the keys if being pressed, stad down, and wont come back up, untill I wiggle them. I found the faulty ones, and teard them down, gave 'em a good clean, but still, they are sticky. But here's the catch: Only when the keycap is on the switches. Otherwise, they are seem to be fine.
What should I do? PTFE?