I live in Australia and have just recieved my Shure SE535's back from Rob at www.inearcustom.com
They are fantastic! he is a true craftsman and I too have been search for someone to do this for many years.
Rob sent me the material to make 3 x impressions and I sent him back the best one for him to create the mold.
I love them!
would you be kind enough to post some zoomed in pics .. would like to know the quality of his reshells and any bubbles inherent.