So, after cleaning the race and case on my Singer 201, I started to think if I should have done something similar on my Singer 66-1s. I spent a hour looking for the needed info, and discovered that the machine would benefit on cleaning and replacing the oil wick. This is something that needs to be done on 66s and 99s...unless they are just setting on shelf looking pretty- like mine are now. This may have been talked about before on this thread, but I can't remember it. So, heads up for those that are using their Singer 66 or 99 and have not checked the felt on the oil wick; it may need to be added or replaced.