Signed the paper work earlier this week for a 9770 STS. I have leased a 9760 STS for the past three years and it has done an okay job. I say okay because while it does a decent job in the sample department, my ole" 8820 and CTS II would out clean it pretty easily. I've gotten the dockage down to .04 % which is about were the elevator starts dinging you. Some of you might say "why worry then." Well I am used to consistently getting my sample down to .02% with relative ease with the 8820 and CTS II. My problem has been with unthreshed kernels in wheat. I can't seem to get aggressive enough. I've done everything that the local dealer has recommended as far as settings go. Is there anything else that can be done. I've heard about aftermarket adjustable precleaners. Would that help? I'm not saying the STS does a poor job. Its just that I think it should be able to do as good as job as the 8820 thats 25 years old.