Carl, that came out great. Definitely something that not a lot of people have in their display case! I'm sorry that I've been swamped with work and too busy to follow it properly, but you really put out a nice looking model!
This would be a great model to dabble around a bit with some MIG Pigments, putting them around and on the back of the blade. Dirt seems to build up there on dozers. You could go to town on the running gear as as well.
Not necessary though--it shines as it is.