I am not sure there was another thread on this adapter (I searched for 2 days) but rather than starting a new thread, I will ad a few things here.
I have two of these now bought from John (JLM) and Jonas here. Possibly V1 and V2.
I took out all the screws, cleaned the threads and put them back with new loctite. The helicoid was also washed off to remove the original grease and regreased with a slightly stronger version.
I had to do this to minimize the wobble. Now, there is still a slight wobble and it does affect the sharpness. In some cases where the lens is too sharp for the NEX, this is a blessing in disguise. No moire.