I have a 1:16 scale M1A1 that I converted to a USMC M1A1HA (I'll post pics later) Anyways, I was dusting on light brownish colored pastel chalk and got everything on how I wanted it. When it came time to spray it with dullcote to keep the chalk from coming off (this is an RC tank it will be going through some rought terrain) the area of chalk I sprayed with dullcote completely dissapeared. The chalk didn't seem to be on the tank any more. I haven't had this problem before, I wonder what could be wrong....
You can see the abrams here before I added the chalk:
The bustle rack items are made mostly of felt and small plastic boxes(1:16 accesories are in kinda short supply)