Ours is at the top of the clean grain elevator. You can harvest 20% corn, switch over to beans then go back to that same field of corn that is still 20% and the Fieldstar may read 12% or 30%. You almost have to re calibrate every day and for sure between crops. Something I never did with Ag leader. Also if the moisture falls below your dry reference for corn(15%) the monitor will ad bushels to the field yield. For example your wet yield may be 175 at 12%, but the dry yield will be 182 corrected to 15%. Not a big deal, but still something that should be addresed as if you get into 9% beans the difference can be significant.