Lubricating my joystick

[Romilis]

Do not use Wd40. It will over time erode plastic parts such as orings and rubber gaskets. Silicon spray is the recommended Lube.

[F16_Neo]

You should try to avoid spray lubricants, made my old EVO worse.
What did help was using a candle, not just on the disc but on the shaft where the disc slides.
Seems like some sprays degrades the plastic and makes it coarser.