When my top thread breaks due to tension issues, the thread flies into the take-up lever rectangular opening and winds tightly around a bar I see in the opening. I have to pick the thread out with tweezers and worry that some of the thread is still in the machine. Where does this thread go, and will it just sit inside my machine until I get the machine in for yearly service? By the time I notice the thread breaking ((especially when I'm at the back of the machine) it seems that this occurs. My dealer said she has never heard of this happening. Any feedback will be appreciated.