G_MAN
Guest
I'm not a combine setting guru, but the "book" settings are nothing more than a starting point. Settings will need to be changed slightly, to give maximum performance in various conditions. If the threshing system is working correctly, and it sounds like it is, look to the separating and cleaning systems. I would experiment with varying the fan speed, and the chaffer and sieve adjustments. Just go a little at a time until you see some improvement. If it gets worse, go the other way.