started cutting some beardless wheat today and the combine is doing a terrible job all the way around. its putting whole heads in the bin, wheat in the heads is going out the back. i have the concave closed completely and its cracking it, and leaving wheat in the heads. i cut for this customer a few years ago and it was bad, but not this bad. i have the beater spead up kit, air deflector in front of the sieves, st,john's concave and bars. all are low time. any suggestions as to what to do?? havent taken a sample to the elevator to see what the test weight is, but theres quite a bit of wheat on the ground as well.