I think this is the article that Ed (EDW) was trying to link:
http://open-furrow.soil.ncsu.edu/Doc...ard%20Plow.pdf
FWIW... Brinly Documentation
http://www.brinly.com/graphics/manuals/PP_51BH.pdf
Speaking of plowing... I have not had any seat time since Ball Hollow PD and I am definitely ready for the spring Bama PD!