With 11.30r1, I tried using the new Response Curve feature to address this problem. Unfortunately, it does NOT help.
For example, with the curve’s “Inerp Mode” set to 0.02, just before the flap lever has been pushed its minimum, the output will reach 0.0, in advance. This is what I expect from the response curve. However, X-Plane’s dataref still indicate the flap value is at a value of 0.0031—Flap Overspeed will result.
It is very annoying to be getting unexpected, unwarranted, flap failures. A possible solution, I think, is for X-Plane to simply exempt failure whenever the flap value is under 0.01. After all, isn’t it realistic for a plane to cruise in one piece while its flap is only 1% extended?