I just finished my first day using the Agrimatics Libra scale interface.  What an amazing product.  I have it in a J&M 1151 walking tandem cart.  We did about 8 semi loads of beans today.  I calibrated after my first load (it was off about 20 bushels) and after that all loads were with in 3 bushels. on 800-900 bushels loads.  The unload detection is great and I love the fact that I can have it display bushels instead of lbs.  I also will be super nice when harvesting wet corn to enter the moisture and have it calculate dry bushels.