I had a set of Cylinder Heads go through the same treatment. I took them to a place I had used many timers before, was quoted a price when I dropped them off. Since I knew the guy and had used the place several times, I like you replied when asked "No Rush". Big Mistake. Not only did the place change hands, sometime during the work, but the parts I supplied " Vanished" and the new owners didn't even know anything about the Cylinder Heads. I went down to the place and found my stripped heads, all the valves, springs, guide plates, rocker arm studs....Gone....Somebody had started a valve job, and some of the guides had been reworked, but nothing complete on either head. It was like someone was getting training on my stuff. I drove 200 miles to catch up with the previous shop owner, and retrieved some of my parts, but ended up that not all of the stuff was at either shop. I ended up with a set of Cylinder Heads, that still need to be gone through. Some of the parts are new, some could be new, and some were obviously just wire wheeled all shiny. Needless to say, Way to many unknowns.