RE: double vision
Apparently there is a Dons Hobbies, not the same as the link you posted, yep, the DV is there and its the SE edition, easier to build & set-up for flying, if you want a great 3-D plane, get one. I tried Ailevator mixing(70%) ailerons to elevators, it did stop the TR but pitch control in hovers became much more unstable.