I'm glad you like the extra so far, but I would throw the SSE on the board right after the extra is done and flying. One is like a minicooper, very manuverable (SSE) the other is like a aston martin vantage (GP extra), alot more refined and smoother at any speed. I need to hop back onto the extra when I get home, out and about for mothers day. But will clean the bench and resume building, I just need to epoxy the tail feathers on the skybolt and the rest can be done to the side.