I understand feeling intimidated by that tiny bobbin screw but no need to. I have a long arm and every time I change the type of thread I use in the bobbin I have to turn that screw. This might help in the future...loose stitch on top = bobbin tension, loose on bottom = top tension. For perfect bobbin tension you should be able to hold the bobbin over your hand in the air and the bobbin should very gradually follow your hand downwards. If it hangs suspended in the air the tension is too tight, turn screw slightly to the left and try again. If it falls like a rock, too loose, turn slightly to the right and test again. HTH. Enjoy your new machine, hope you have many years of happy sewing on it!