So sorry for your machine problems. I would only go to a service person that works on Vikings. The one that works on them in our area is a ways away but he knows everything about Vikings. Could you call a Viking dealer in your state and find out who they recommend? Hope you can get this resolved. As for the drop of oil, the manager of the Viking dealership told me I could put one drop below the bobbin. I did this one time and then wiped it off. I have had Vikings for for over 40 years. Never oiled them, not starting now!!