Hi, mario21 and jimmywilson:
Welcome to our forum. I'm sorry to hear about the issue with your Tenacious. Please reach out to our Warranty & Repair Department. You can reach them via e-mal at firstname.lastname@example.org.
Not quite. Sorry to disagree, but the early Mules (probably the first 10) sold out quickly. Most within 15 minutes to an hour. It was only later that they started to slow down.