mine did,besides the things that ive mentioned,,,if tommy does the same on every engine,and sends instructions ok ok im beating a dead horse,im not going to tell the man how to run his biusness,,,,,,,,but mine ran like a clock from the first start,,im actually having to lean the main needle,and fuel consumption is dropping,and ive never heard the engine miss in transition,all my airframe glue joints and screw connections shaken loose like with singles,its actually quite nice ,,but really if every engine is qc,,,d correctly and prerun,,i can say for sure ,,i would be glad to spend more for the peace of mind,,and then wrap the engine in plastic ,,like others do,,and ship it...with instructions,,if i had the computer skills id gladly compose an instruction manual,and have a paper copy with every engine,,