Things I discuss with customers each fall:
-whenever possible, avoid combining beans perpendicular to the rows. Like when you're opening up a a field and have to cut across the endrows. When you cut perpendicular to the rows. the knife drive bites into a full header's width of stems, then runs without any load for 30 inches, then slams into another full width of stems. If your sickle is a little worn or your wobble box is sketchy, cutting across the rows will quickly point out any weaknesses. If you have to cut across rows, try to approach them at a slight angle to minimize the shock-loading of the cutterbar.
-increasing the downforce on a bean platform MAY make it cut closer, but it also reduces the amount of free travel/float available if the cutterbar needs to climb over a rock or flex over an old fencerow. In a perfect world, I'd run all bean platform cutter bars in the middle of their float range so that cutterbar has "room" to move up and down as needed.
-no matter what style of snout is on the end of the row divider at each end of a bean platform,, that snout, tip or divider should not run in constant contact with the ground. They should cruise an inch or so off the ground and only briefly touch the ground when you cross a waterway or low spot. They are "deflectors," not "runners." If those tips frequently touch the ground they scrape away the leaf litter, stems, etc. and expose bare, damp dirt that encourages the cutterbar skid plates to start pushing dirt.