Thanks all.
It was actually one of the first times I decided to try ICNR.
I wasnt fussed about the final result and therefore tried ICNR for the heck of it; it was more of a guiding test night and in the end it guided better than expected. Very pleased.
Next time, I'm aiming for longer subs with better collimation.
Plus, no ICNR. This subtracted a lot of good data I think.