A question to you knowledgeable folks out there - I have an old Singer - the black kind with the gold scrolls on it - and I am afraid to use it as the CLOTH COVERED CORD is so frayed and it really needs to be rewired and reconditioned. Does anyone have any idea what it would cost? The motor has a catalog no. on it B.U. 7-0 does anyone know what that means? I have it in a cabinet and it is a workhorse that sews through denim seams like butter and would like to see it working again, but in a safe way so I do not electrocute myself doing. it. I love my 2 Janomes and now have the old Singer as a display item. Any ideas or help in this matter would be appreciated. Thanks!