check rethrash housing for holes, make sure rad housing update was done, feeder chain and sprockets some had updated tensioners, feeder clutch pack oil if burnted plates may need replacing. check front of rotor for wear. chopper knives and rotor.vertical auger flighting on hopper.bubble up auger.impellers on rethrash tight on shaft (worn key way). seives tight just got an 06 last yr and had to do some of these things .have 2 rebuilt retrash housings for sale.