Buzzgob Work in Progress

I've had this guy on my bench for a while, and finally have the urge to finish him.  I'm doing his two grots as well and figure I'll use them as objective markers.  Great model, but I'm not sure I really like the style of his axe... there are too many bits on the end and I can't decide how to paint them.  In the end its going to be a weathered metal look, but I wish it was something better.  Anyway, love the Mek army list and will be doing a mega dread at some point soonish (after another Ultramarines unit).