Order a set up and operating manual for your plow from the Charles City Museum. Back furrows and dead furrows aren't that had to figure out. Just pull your plow up to what you want to do, and figure out what you have to do to make the plow level front to back and side to side when in operating position. Practice is usually a better teacher than listening to us old timers. Chris's (Admin) Dad won a world plowing match, and maybe has some old articles that he could steer you to. Basic rule of thumb for 219,419,and 619 bottoms was plowing depth was 1/2 of cutting width (i.e 14&quot; bottom to plow at 7&quot; deep) and 4-1/2 mph.