I don't have the car with me handy for photo. But it is actually very easy, not any manual modification required.
Just remove the small black plastic holders (knobs) on each body plate of the Sand Master.
There are at least 4 on each plastic body plate, the side plates should have 6 on each.
Buy some hex screws, 5mm diameter, approx 8-10mm length, with 5mm nuts.
Then fix each plate with these screws and nuts.