The first assembler arrived on time, spent two hours and half assembled set.  The first assembler left/quit the job without saying a word that he was leaving.  He arrived carrying a few basic tools in a shoe box, and was unprofessional, but basically pleasant upon initial conversation.  It was another 2 days before someone could be scheduled to finish the assembly.  The 2nd assembler was professional, carried a tool box, and was detail and concise in completing assembly.  Because the 2 boxes the set was shipped in, each weighing 72 lbs., the assembly service did not send their tech out prepared with a dolly to move large pcs.  The assembly service must advise each tech about conditions of items packaging, weight, and be sure they arrive with a professional appearance, & tools in a tool box, not a shoe box that looked like it was falling apart.  The tech should also wear a shirt with the company logo and present an i.d. upon arrival which did not happen.