Wow, never seen this kind of machine before. It's really well adapted right from the orginal. And really stunning: even the hydraulic ram seems to work in your model.
Seeing your vehicle in the dirt outside my first thought was, if you will risk to scratch of the paint by inserting some of the soil and with this showing the vehicle in heavy action (or if the paint will be scratch resistant
) ... and actually you had the same concerns
BTW I wouldn't risk this too.
Maybe it might be an option showing the machine on duty by using the 7843 bulk goods; it's a more "clean" soil which should be insertable into the scraper without doing any damage to the painting.