What is the verdict of the grain grabbers so far? I have a 20ft header and was wondering how they work in soybeans. Some people say to have a couple more (ie. order 25' header for a 20' header) and others say to take two out of the middle so they don't wrap (ie. ordering less). What is your experience? How well do they work, what is the good/bad points, and would you recommend them? Thanks in advance.