2016 ulterra

mine would shoot back and forth 25 ft. over correcting itself mostly if it was calm or not much wind I wanted to throw it in the lake but after 6 calls to factory they let me take it to service center and they put a updated head on it under warranty and it works like a dream now. thought I was going to have to buy a new 1, so they can be fixed

There was an issue with the magnets (I think my service center said was the issue) early models coming loose. There were other updates that mine was inline for but the whats have excaped me. I only seem to remember that there were 4 or 5 changes most of which were minor.