I have been waiting on Andrew Richard owner of Ronin Aircraft for a total of 9 months. The excusses started with poor materials then poor wing design. He told me he could design a carbon fiber wing that would be lighter and stronger. I waited, and waited, and waited. Latest was that he has built 4 spars but all failed when tested. He has not provided any pictures or any evedence that anything was ever done.
I believe I have been screwed out of 7 thousand dollars.