I have come up with an idea that may help some of you as it has helped me. I placed black foam pipe insulation around my coil edge what it has helped with is protecting the sides of my coil where as before I might hit a tree or the side of a sidewalk and put a major dent or scratch in my coil and now even if I place my coil face down it will never touch the ground.And believe it or not it slowed down my swinging speed and that was a big problem for me.Just cut the foam to fit and secure it with plastic wire ties.Even if you have a coil cover it seems to make the detector feel better in your hands.My 250 now seems to be balanced.I hope this helps someone.