I finally got around to finishing the tracks(the pics are a time-lapse of about one week). To start I first had to mask off all the roadwheels from the teeth with silly putty. It took about two hours to mask one side of the tracks, so four hours in total. After the masking I was able to start the basecoat on the tracks of Tamiya Acrylic Flat Earth, a day later a wash of burnt umber, then a wash of Testors enamel Flat Black, then a wash of Testors enamel Rust, then another wash of burnt umber, and finally the drybrushing of some blackened Testor's enamel Steel.
I was also able to do work on the exhausts/mufflers. Drilled out the mufflers, and then a mask of silly putty, painted a base coat of Testor's enamel Rust. Had to use a type of paper masking in order to paint the pipes on the bottom of the vehicle, without filling in the slight seperation between the hull and pipes. Then I was able to do a slight wash of hydrated iron powder, yes iron powder, it's a weathering technique I came upon trying to make rust a while back.
Got the lower hull completley weathered and the tracks touched up and finally on the carrier. So I hope to get some more pics up as soon as possible.