I am so impressed. Having been raised in the manufacturing business of sewing machine cabinets I was also aware of the wholesale and retail part of sewing machines. HOWEVER, at no time was I involved in the process of restoring the beautiful old machine heads and did not have a clue as to what to do for the major overhaul. I did repair machines but no restoration so I do thank you for all this wonderful valuable information. You are a dear for passing it along to the rest of us. I do have a 1911 White in need. I had the gorgeous cabinet restored professionally about 30 years ago so now maybe I could work on the head. Thank you again. BarbM32