I wouldnt be worried about setting the timing. Id be pulling the pan to inspect the bearings. I then be at the courthouse fileing a lawsuit against the so called builder. Once I got my money back Id be taking it to a repuitable shop and have it completely torn down and totally inspected and cleaned. For 88.00 bucks that engine should be gold plated..
there should of not been anything in the cooling system if the engine was ran through a pressure wash after being baked. Those blocks come out of the baking machines just about spotless. Thats a 3 part processed. Bake, shot blased and then air blasted. The pressure wash ensures a very clean block..