HELP YoYoJam bi-metal coming loose

Guys, I need your help.
I have 2 YoYoJam bi-metals(with solid spin) and they both come loose in the middle of play.
Do you have same problems with your YoYoJam throws?
What can you recomend as a solution for this problem? I were thinking about putting special tape for threads on the axle.

that used to happen to me but i got an alan rench and tightened in one side to stay there and now it doesnt happen on wny of my bi metals

On one of my hybrids axle stays really tight in one half but it still comes loose in middle of tricks

use a bit of teflon tape on the axle and it won’t unscrew anymore.