I’m also having a trim related issue, although not exactly the issue described above. In flight everything seems normal, with the effects of trim giving the correct response.
On approach i have been suddenly nose diving towards the runway after crossing the threshold, without the ability to correct, always resulting in a ground impact.
Whilst parked and trying to troubleshoot the issue i noticed that this;
Results in this;
That’s not right, is it?
Jumped in the DV-20, and the result was the same.