I removed mine today and I did put the metal plate back on. When I tried to run it with the blade as high as it would go it made an off sound. Hard to describe, not a rubbing and I didn’t see any signs of rubbing afterwards. I dropped the blade one notch from max and WOW, whisper quite. It may have improved the cut and I couldn’t keep the blade guard from clogging with clippings. When I took it off there were 100's of little crawlies living in there.