What would I have to do to tweak up. I have been running the combine thur my dealers shop every other year. This R50 is a real pamper case, I run 100 acres of beans and 100 acres of corn per year. This year I will run about 350 acres wheat. Three years ago replaced bars on rotor, and the first part of cage. I had never ran with another combine until this year and the old feller suprized me. One question, last year I noticed some oil leakage on the rotor side of engine. Dealer said that some o-rings were the cause. I had him repair (leak gone) but was costly fix. What causes this type leakIJIJ Oh well leak is gone. Thanks for the reply tbran...