Thanks people, had a play this morning and I ended up knocking back the power a little and the wire speed alot also checked the welding shroud which I think was also contributing. Welds are now nice with no bubbles although I need to work on being a little more economical with my welds. Yes I'm migging and am using a wooden table. Letting the gas flow for a few seconds before starting to weld has helped get a clean start to the weld too. I have a lot to learn.
Including not welding in a vest (it was warm), I got a little UV burnt! Doh!
Oh a deeper V cut has helped get a solid weld too.