I have a Janome Magnolia that I purchased in 2009 & after I got it home that was the same thing that I noticed about it. The line of stitching was like yours....not totally straight. Since my sewing does not require it to be perfect or close to perfect it does not bother me at all. I don't know if this is true on all Janome machines but I do know that my Singer sews very, very straight stitches.