Davey i don't think it does any harm to run them on the rich side until you get some more time on the engine.Everybody does it differently.
Ken i would love to have seen that roto tiller with the flame coming out of the exhaust.Did you know that if you turn the shed lights off at night while bench running a saito on some good nitro it looks quite entertaining? plus if you loose a prop or spinner you get to turn the lights back on and have a bit of a treasure hunt..