Yeah like most said, keep working on it. Its not a pattern I would let go at work. What brand of gearset are you using? Just adjust the pinion depth a little and see how it looks, dont change the backlash, when you take shim out, it might open up a little, but still be ok. A little time spent in this step will be worth it down the road.
*edit* I was referring to the couple of pics earlier, not your latest one, I didnt see that one. it looks decent.