I will admit I could certainly use the WLS. I have an autoimmune disease and am afraid that the surgery might not go well with that. As for cleaning my machine. I have to take the stitchplate off and clean the bobbin case etc. as often as everyother day when I am busy with my Linus quilts. I actually worked for a Bernina dealer when I first started purchasing Bernina machines. I am not ashamed to confess that I only have my machines looked at by a real repairman when they stop working altogether. I guess I am just to cheap.