Thank you guys. Lots of good information here. My wife is not in favor of my bright idea. She might be on to something, too. You see, my lister is 4-row, forty inch. She said, "two passes and you are done." We usually plant 8 rows of potatoes. I really do not see a problem. Nor do I usually listen. A two-row might be handier, but.................... Ron Cook Salix, IA