I just got a 99k and it is running fine. I've been taking it apart and cleaning and oiling it. I think it might need new wiring on the motor. There is no plug on the motor to plug a cord in. My featherweight has a 3 prong plug that plugs the ac cord into the machine but this one is wired direct into the motor. Can I renew the wiring? It has a 2 prong plug that goes in the wall but I'm kind of scared of it. Any suggestions? Thank you!