Go back and resew the bottom of each seam so that it lays flat. You can look and see where which seams are not flat. Then sew along the last couple inches or so to tighten the seam. You can choose to run another seam about 1/16" from the original seam if you have some that are wider blades than others. That way you can shrink it down enough to add another blade. I would add the 1/16" new seam on as many blades as needed to make room for the new blade. It is easier to make the seams tighter than to rip out and start over.