Leaf Spring Mounting Plate Mods

So, as reported earlier, I bought new leaf spring mount plates.  Surprise! Now the U-bolt washers don't fit in several places.  I briefly considered hunting for smaller diameter washers, but it turns out that a socket wrench doesn't fit either -- that's a non-starter. (How could the manufacturer have decided that that was OK?)  So, I ground out room where I needed it.  Here's what the front mounting plates look like after grinding but before (re)painting.