It was the top of the model, I even noticed some prints the hot end moving around 1-2mm above the print still “printing” but extruding nothing. The extruder gears were not even trying to turn (i dont think?) They are working fine now though with the new nozzle. I dont think I changed any settings as I am sitll new at this I am using defaults 
Well I did do it once - will try it again more in the new year
I think this is the link for those who are looking. But it is over 200 posts long - lots of very interesting stuff there!
Oh goodness yea. I would never waste when I dont have to! Just expedient with some time pressures for xmas to change it out now and fiddle later