Lol.. Yep, i would like to shoot all at 1x1, but as i am still in the learning stages, getting data and then being able to process it keeps things ticking over. Up until now, my subs have been only 180s, so never binned. I'm now pulling in 600s subs and 300s RGB's
Looks like darks/bias at 2x2 binning as resolved the error.. Everyday is a school day!