I've been highly delighted with this machine since I got it in 2016, and upgrade from the 1000cpx. What I did notice is that when I finished I could take the thread out quite easily but I've noticed over the years that it has become increasingly harder.
I usually use threads that came with the machine, nothing special and generally lighter range of colours. This afternoon I had to scrabble around for something towards hot pink and finished up using some red Gutermann Terra that I've used just with the overlocker.
Result was that the thread came out of the machine cleanly when I'd finished with no problems. Now I'm wondering if just using what came with it and replacing with the same, was not a good idea. I only ever use these threads with the Janome, the Bernina overlocker always gets spoiled with decent thread and if no match I use Gutermann Mara 120.
In addition to this I had no tweaking the stitch, it just ploughed on, no skipping at all, even though it was a fine jersey, which can sometimes be a problem getting it right.