Seen the same problem firsthand when the local dealer brought us out a ctsII demo. We were combining flax(oilseed...tough wiry short straw_likes to wrap) He combined not more that ten feet before he blew the RH rotor gearbox...straw had wrapped, plugging the RH rotor, and apparently the weakpoint was the gearbox. Not fun tryin to unplug with gearoil dripping on your head either...needless to say, we're not buying a ctsII. Demoed a 9650sts in the same field...had trouble with the discharge beater wrapping until it plugged. Single v belt smokes offly quick.