New mum brain- this might be a daft question... When you raise the presser foot aka take-up lever, the upper tension discs release and the thread passes through without trouble. All good so far. The question I have is- does any part of that process work on the bobbin thread?? I am currently using an Bernina 850 Industrie. The bobbin is a Oscillating Hook type, the bobbin case tension is fine when using the drop-jiggle test, however the thread gets really tight upon inserting- a bit like what it feels like when you pull on the top thread with the tension discs closed...

It's only becoming a bother when I raise the foot to cut the thread. I think the stitch formation seems alright (still fine tuning), but the difference in drag when pulling both threads out is noticeable enough to ask the question regarding whether tension is released at the bobbin when raising the take up lever? Anyone? Any thoughts? My newer computerized Janome doesn't suffer from tight bobbin thread, but it's a newer drop-in type bobbin.