My Ender 3 Pro stopped extruding after I swapped out the head. I replaced them with these: https://www.amazon.com/gp/product/B08GYZGBR4/
My filament is PLA and set the extruder is set to 200F When I hit extrude you can see the bronze gear that is supposed to push the filament just grinding on the filament. I also can't push the filament through but have no luck. My nozzle size is .04 and the filament is 1.75

Any ideas would be appreciated