I didn't say there were no lemons! I pretty much think we have all had lemons before,That doesn't mean that what I have stated is not true.I know for sure that Brison, BME,and 3w will give you stats on the engine RPM readings with a specific prop they run if you ask,If I remember right Brison puts the rpm rating on a tag with your engine,atleast they have in the past.I fly 3W and that's all I fly and I have had a lemon in the past too but that doesn't change anything that the manyufacturers do. They do run the motors regardless if you believe it or not.