Cura calibration and setup

So I decided to try out Cura, I have been using Slic3r up until now. I wanted better support generation for my prints so I thought I'd give Cura a try.

I have managed to get all the settings sorted (copied from Slic3r) except extrusion. Now initially it was trying to extrude super fast. I fixed this with adding M82 to my start gcode, great! Now the problem is that it is under extruding, barely extruding at all. The Extruder Motor seems to do barely any extruding and normal retraction, also it is doing it in short bursts. I haven't set the 'E-Steps per 1mm filament', that is left at 0 which will apparently use the setting on my firmware?

What am I missing? I have attached my Cura profile if that helps.

From your configuration I could see you're using a 0.3mm nozzle. Is this really true? Our Ormerods are usually shipped with 0.5mm nozzles...

Yes, I have changed the nozzle to 0.3mm (I am currently printing fairly detailed pieces), this works great for me in Slic3r.

And do you have that "EAtoR" plugin disabled now that you've switched to absolute extruder positions?

Yes that's right, am I correct in my understanding that you either use the EAtoR plugin or set M82 in your start gcode?