Well, I just finished tweaking it - again - and changed a pulley on the reducer to try and get it to run smoother (the brushless motor isn't as smooth at very slow speed as a brush-type motor). I'm getting there. And I agree, having issues right from the start has been good as I've got a pretty good understanding of this machine now.
As for sewing something, it could be a while. The weather's been hot, which I don't like, and my hay fever has been particularly bad this year. The doc put me on yet more medication for it (one of the problems with getting old is the number of tablets you end up taking!!!) and I have an acute lack of enthusiasm for doing much as a result.
Still better than the alternative, I guess.