[Messer]

Nope, on the inside the lever connects to to a round part and there's something like grese or sillicone, which is liquid, yet very stiff and sticky. On one of the levers there's plenty left and it works fine, but on the left one most of it is gone (maybe it dried or I accidentaly wiped it off while cleaning the stick) and the lever is rather loose, so pointing is down after a certain angle (about 55-60% throttle seting in Il-2) it just "plops" on its own.

I'll try with sillicone lubricant, maybe it'll work. Thanks!