a couple of mig questions

[Highpower]

You know the rule dude. No pics.....  

Don't expect MIG to be spatter free - because it isn't. And like Paul said it's normal to get more spatter with straight CO2 compared to an Argon/CO2 mix. The arc burns hotter under straight CO2. The fact that you are getting less spatter than with flux-core shows you are on the right track.  

p.s.
Keeping track of your arc length is part of "Paying attention to what you are doing".