I jst finished the setup on my second version C machine. Checkeed and tightened any lose screws measured the the head weight at 80.4 lbs 2 lbs better than my 1st machine. I put in the card turned on the switch it homed then said clear board sensor. Not a big deal, but I still think my head is going to explode. I should explain why the second machine I had extreme heat on the flex shaft on the 1st one. when I called amazon they asked if I wanted a refund or new machine, two hours later this one was in transit free 2 day shipping. and sent me a prepaid ups shipping label for my old one. I don't think many companies can beat that service.
Chris