I'm going to rant for a few sentences if you'll allow me. I have left messages and sent an email to Stern support about issues with my T-Rex/JP Prem. I think its PITIFUL that a company who's charging what they are for these machines doesn't have the courtesy to call or email back after a customer reaches out needing help. I realize some people have hectic schedules due to covid but its been a full week tomorrow since I first contacted them. No excuse not to get back to a customer after that much time. And this has happened more than once. Rant over.