Last night I printed some spacers. Some half , some three quarter, and some one inch in height. These are not very strong as I didn't want to waste a ton of filament on the first rough draft. I'll try and get them test fit this afternoon.
These won't move the wing towards the back of the car like the Boomba ones do. They will only lift the wing off the hatch.
I'm not sure if I'm going to only space the sides, or spaces the sides and the middle of the wing as well. More science is required.