I've been slowly working on the pigment build up on the running gear using fixer to hold it all in place. The tracks have had the same treatment but not so heavy. The base has had a dose of fixer too and this has darkened the colour to a more pleasing earth tone. After fixing the model to the base I've added more of the MIG wet mud to hide any gaps between the tracks and the base and added a touch more were the figure stands.
I'm pretty pleased with the overall effect so far, a few more tweaks & pigment chucked about and it should be all done.