Well as the other thread titled Murex mig be quick seems to be playing hide and seek I'l post some progress here.
The difference between .6 and .8 was like night and day, so much easier
I started on the small piece and finished on the bigger one, by time I'd got to the bigger one I found the push/pull techniques coming into play, I found the push worked better on the internal joints and the pull was better on the flats.
I put a small chamfer on the edges of all the bits on the last piece which I think helped as well
I'm still not convinced I've got enough penetration, but as I'm typing I'm thinking I could cross section through the welds and post some pics, hmm later maybe.
Also the beads still seem a bit large and proud, or maybe that's just me.
Anyway criticisms, comments and advice pleeeeeeeeeeeeease
Ps. The guy I bought the welder from had been running the .8 wire in the .6 side of the wheel!