Oh my! I used to oil my old machine in every moving part too. My new machine has no instructions for oiling, just cleaning. It's hard not to oil them when you feel it needs it. I'd take a Q-tip and wipe eveything down, take the thread off and the bobbin out and turn it off for a few minutes. I wound up taking mine back because I had the same problem. Hate to tell you but it was operator error. Be extra sure that the top thread goes in or around each position, carefully. If you have a thread cutter, take about 2 stichtes and then cut the thread, then start sewing. Hope one of these ideas help.