It took me a while for RXRCER's post to sink in, but it does make sense. I have a couple Slow Pokes that are almost the same way, they can be a little unpredictable. Both, however, are fun to fly and for people to watch. I don't think the Tango will be an exception. This one should float, and be quite a bit easier to manage compared to the other two mentioned. Last I checked, the Tangos are sold out and on back order. Hangar-9 must have done something right.

NorfolkSouthern