thanks
@Lachica The machine goes up in 1 mm steps for the buttonholes and it is automatically programmed for the lock stitch and cut function, you have to override them if you don't want them.
I have watched a couple of YouTube videos and they all show the length going from 18 to 20,21 22 etc. so must just be a thing with this model, plus everyone has touched the cut button at the end of the buttonhole process, so again must the thing to do.
My QE4.2 just used to auto cut the threads at the end and this is what i was expecting.