NDDan
Guest
Run concave as tight as possible. About 1_8 to 1_4" if gauge is correct and concave is fairly true. This will thresh crop better and give the cylinder suction to get things movine and flowing as good as possible. Remove filler bars if present in concave. If material is rumbling in cage (noticeable before loading up the bin) you will need more rotor RPM. Not so much RPM that speed starts spliting beans. You best find RPM that flows material without rumbling but not to much. I have converted an older machine to accept P3 rotor so I could install the rotor sweeps. Sweep really make the bean stem flow nice at the super low RPMs. The better you flow it the better the separation. Good luck