I hope it " comes to you" soon. I have the evolve and have had for several years. Last Sat I could not get it to sew correctly, I knew it was "operator" error,. slept on it, got up the next day. still could not figure out what I was not doing. Took it to the dealer. and I was not depressing the lock when I was threading the lower looper, then the upper looper. It was fixed in a minute. I have threaded it before just could not get it correct that day.
best wishes for a better day tomorrow.