Seimitsu LS-32 sticking

Hi guys,
quick “help me” thread.
I have a Seimitsu LS-32-01 in my SE, and it sometimes sticks in a direction (usually d/f or up)
Would you think it could be because I have the dust cover under the metal panel, instead of on top?

Or am I just “doing something wrong”?

The dust washer should be on the top of the panel and not under it. If you fix that and there is still a problem. Then unscrew the bottom of the LS32, pull the pcb with switches out and look at the switches. Make sure there no build up or something sticky on the switches. I cleaned my cousins JLF cause it was getting stuck and he has spilled beer on the joystick. lol