The shop where I bought my Janome machines (I have the 6650 as well and the 8400) provides servicing by a Janome trained technician so I take my machines there. It's about 3 hours one way so I always call the shop and we make arrangements for a day when the technician will be available so I can drop off early in the morning and pick up at the end of the same day. I combine it with a day of shopping. Sometimes I'll drive in and stay overnight so I don't need to leave so early in the morning. I try to do this yearly but somehow I only seem to remember in January - New Year's resolutions and all - so I'm making the trek on snowy, icy roads. I need to revise my schedule!