I grew tired, quickly, of dealing with the turnbuckles on the lower arms. So, I fashioned a set of adjustable stabilizer bars on my B7100, like the bigger tractors have. I messed with the blade, and they did well- time will tell with a heavier implement, like the tiller. I have included a photo.
http://s65.photobucket.com/albums/h205/br549_red/?action=view¤t=stabilizer001.jpg
http://s65.photobucket.com/albums/h205/br549_red/?action=view¤t=stabilizer001.jpg