After 2 days of trying to make the Range Video Jet fly and not break apart in RF-X I finally found the fix, add weight to the wings, RF-X must be calculating the weight to size of the wings as too "delicate" and allows the wings to flex aggressively (flaps like a Humming Bird) and then the model breaks apart.
So I doubled the 4 wing section weights and the model would fly good at most airports, but to fly from the Sierra Nevada Cliff airport and launch over the railing, quad weight was needed, also increased the nose cone weight to keep CG correct.
Thanks for this great model Boof69, awesome model, I love it.
Short flight video in RF-X.