I have an R2. I roast my own home grown beans. I switched to another batch of beans that could be 1 or 2 or 3 years in storage.
This bean is generating a lot of chaff. Also most the beans in the final roast have chaff bits in the beans seam beside mixed in with the roasted beans.
This is a new situation. I have been roasting about 25 batches. I am about 7 roasts of about 600 grams each since replacing the drum on my R2. I account for the increase chaff after a roast from the switch to a different sack of my beans. Caturra/Catuai/a little Typica
Medium City Roasts (roughly)
I roast at 230 C
P 7 / F 7/ D7
.¿ Is there variable I can play with that might make a difference?