FWIW I hear from sources I trust that the new machines are not as reliable as the older Berninas. Which is a real shame as that brand has been just amazing, and it was certainly true "nothing sews like a Bernina".
Consider repairing and selling your machine, perhaps on Ebay?, and buying an older Bernina that is reconditioned. This is what I did when I wanted a Bernina but could not afford a new one (the 700 series had just come out). I have a great local machine tech who I knew would be able to fix any little problems that came up and so I bought an Artista 170 from a reputable Ebay seller.
That machine has been a godsend, my piecing powerhouse. I added LED light strips for my older eyes and will never piece on anything else! I am fortunate I can set up separate piecing and quilting stations, for quilting I got a Juki 2010Q and finally a longarm of my very own. But the Bernina 170 is my favourite, we have spent so many happy hours togehter.