Hello user101!

Okay, I'm thinking ...

...

I'm still thinking ...
'Internet sensations' have been made out of less than this.

What you have confirmed is that the roller was set at the lowest setting in the Video.
The above picture (with my infamous red arrow) shows washers that shouldn't be there anyway.

... Let's change tack, and assess the condition of the bottom blade and tyres.
Can we have a close-up of the bottom blade taken from the front?
Also, can we have a close-up of the condition of the tyres? There seems to be some damage.

[Linked Image]

This will help in assessing how to proceed in this matter.

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JACK.