Should have mentioned, I just got the stock WSD-60, I think you made the right choice upgrading. The stock torch is OK, but it has no roller standoff and it usually cuts with a slight bevel. The angle varies a bit when I change consumables, so I'm guessing it is an issue with the alignment of the electrode and nozzle.

I just got some of the smaller nozzles (.9-40A &1.0-50A) for it too and noticed a huge difference in the amount of slag over the stock 1.2. It also seems to make a much cleaner cut too(either that or I am finally getting practiced enough to do 1/4 well).