RE: Can I Produce Washout with Ailerons
Lnewqban, split flaps may be easier to add but their primary addition is drag more than lift due to the split style. Hence my suggestion to cut away part of the wing and add plain flaps. Plain flaps at smaller angles provide camber more effectively and doesn't slow the model with larger amounts of added drag.
But either way flaps or not this is not going to be a fun airplane to fly with the wing loading being so heavy. Certainly it will fly. But the requirement to keep the speed allways on the boil will take some of the flight style options away. Adding the fixes we've discussed here may aid a little but it won't address the root of the trouble which is the wing loading.
The optimum solution to the wing loading problem would have been to buy a different model. By avoiding the ones that have known issues with high wing loading and hence poor flying charactaristics we'd force the makers to build and sell better products.