Thanks,
The dusty effect was created using very thinned white and desert yellow mixed together and misted from a distance. This is a technique i've used before on desert Hurricanes.
The mufler was done using a very light dusting of MIG productions light rust powder, the same as was used on the tracks.
One question though, do you or anyone else normally add the markings before or after any post shading and weathering? I left these till pretty much last but am not very happy with the result.
John