Hey Rolf (and tbran too!!) At the risk of sticking my foot in my mouth really badly 'cause i'm not a combine person: I think that you and tbran are talking about roughly the same thing. 7_16 inch is about 11mm and 8mm is about 5_16 inch. 2 inches is 50.8mm and 1 3_4 inches is about 44.4mm. Forgive me if you already had this figured out...
CubitsIJ Your father isn't building an ark in anticipation of precipitation, is heIJ Weather people are predicting a major drought for the midwest U.S. crop growing region this summer - I'm sure thats just what tbran wants to hear after his dry summer last year!