Shark Extra Parts

[Mike H]

I recently had to open up my vintage Shark NV22L vacuum cleaner to replace the belt. Once I got all of the screws out of the bottom cover it fell off, along with two rectangle shaped black pieces of metal (lead-like), 2-1/4" by 1-1/8", with one long edge sloped. They look like some sort of bumper piece but I can't find reference to them anywhere or where to put them back in.

Any Ideas.