Happy and Holy Easter to all.
This engine began this right out of the box. Initial, gentle, gradual throttle increase to less than half produced a full speed runaway. Only my lightning like reflexes prevented an unplanned off the table launch adventure. My aperture relaxed, and I advanced the throttle ever so slowly, and you can see the results in my crummy videos. I contacted the dealer, and this was his response - “Best guess from the videos is that one of the pick-up rollers has a short or isn't wired correctly. Should be an easy fix. Send it back to me.” As it was a brand new item, I was reluctant to accept a repair, and asked for, and was granted, an exchange. Good customer service. It is otw back, and the exchange will be shipped. I post this here not to complain, but for the intellectual exercise of discussing what the likely culprit could be.