I noticed the fan speed to expell the beans after roasting is not strong enough anymore to lift the beans out of the roaster. I suspect the bottom of the roasting chamber is gunked up enough to limit the fans air flow. I can see dark brown residue that I just can’t seem to be able to clean even with the rough side of the cleaning sponge.
How can I clean these inner parts after hundreds of roasting cycles?
P.S. cleaning with a sponge helped (beans come out) but would still love to completely clean the device down there.