Just recently bought a bernina 1008,and the bobbin tension has just started acting up,it is too loose,i tried everything to fix it,changed the bobbin,changed the bobbin case,re-threaded a million times,changed the upper tension,changed the needle etc etc nothing seems to work and i dont wat to mess with the bobbin case s***w as i could end up messing it up completely!also tried cleaning the hook race,anything else i could do?its a practically brand new machine!
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