This is why people are hesitant to take machines of all kinds in for servicing. My super wonderful awesome $5 thrift store machine is fantastic. It is quiet, it isn’t fussy, I never have to fidget with settings etc. But then it had that little seizing up problem and I took it in to be properly serviced by an actual professional. And now it is gradually skipping more and more stitches, the bobbin thread is showing through onto the needle thread side and I can’t figure out why.
It doesn’t skip on wovens (this is a piece of flanelette) but you can see the bobbin threads popping through. If I loosen the needle thread enough to match this, the seam becomes ridiculously loose. *sigh* Can’t deal with it today, but I will be visiting Sawyers next week.