I know about the wick under the needle plate and I know about the needle bar.
It is almost impossible to get to the closest dealer (distance and health issues). I clean the machine often already (removing the covers).
I would like to know where the service tech lubricates (and with what). I can find some oily felt washers (2) on the shaft that runs the length of the machine and I can see grease on a cam in the center.
Thanks, Ken