Finished replacing the burrs on my LeLit PL53 grinder today. It's pulling in the beans better with the new burrs. It's tricky to get the top burr out of the carrier. If you first take the carrier completely off, then remove the lower burr and sweeper, you can then partially screw the carrier back in, as a support. Now you can use something like a flat blade screwdriver and mallet to gently tap the burr out of the carrier. Tedious, as it's a very tight fit, you have to work around the perimeter, and slowly tap it out.