I just found this on AliExpress: $11.25 | Mellow LLL Filament Buffer For 3D Printers - Automatic Filament Feeding, Break Detection, Improve Print Quality For Voron Vzbot https://a.aliexpress.com/_mtdTiwv

Literally use one just like this to feed filament to the extruder - has feed and retract buttons and can also double as a filament runout switch as well

Isn’t this just a filament buffer? You can buy one on AliExpress for 10$

Oh what about that bearing? Maybe the bearing is going out?

Are the teeth worn down? Maybe it’s time to replace the gears. (Throwing stuff at the wall here) other than that it sounds like maybe there is a piece of filament stuck somewhere rubbing against the gear?

800x800x 200??? That’s the weirdest damn dimensions