Thanks guys, lets see If I can get you some answers.
Kevin - Armor paint school sounds fun, just have to find the time.
Mike - Its actually a combination of Tamiya and Vallejo Greys in different layers, not mix together. The Dust is pin washes of a custom mix of Oil paints in turpenoid.
Ian - here is my order of business
1. Base coat
2. Post shade (2 times for horizontial surfaces)
3. Detail paint
4. Gloss coat
5. Decals
6. Semigloss coat
7. Filters and streaking
8. Flat coat
9. pin wash
10. weathering wear
11. Wear and tear marks
Marcin - To do this you need well applied decals that have been sealed. I then use the base color in a dry brush and just work over the area.
Vinnie - Do we get to see some progress pics?
Henk - The tracks have been base coated in 2 parts Tamiya Hull Red, 2 Parts Dark Grey and 1 Part Flat Black. The the faces and areas that rub on the road wheels rubbed with 9B graphite - thats all I have done on them so far.
Jan - I have over 80 hours in this baby - I will get to it, thanks for the reminder!
Carl - The pics of 421 just show the two lower pin, nothing else is visible to hold the tracks - must be gravity?
Robert - Sunday shows and I just don't get along well

Cheers all!