I have 2 Kyosho AT6's and we had to set the toe at 0 in order to make a landing or take offs. The reason is when speeding up one wing will try to lift and will then ground loop when you have toe in. We tried both out and in and found that because of the closeness of the wheels that the toe setting is very important on some birds the only good take off's were with the toe set at 0
Also check your wing incendence you may have one tip with wash in and the other with wash out, that will couse the same thing