Toni,

Try running 30% heli fuel, my Saito 72 was a dog on my Do until I switched. I run a 14x4W APC on my 72 in the upper rpm range Gjeffers specified.

Weather here in PA is unbelieveable! 50 degees F yesterday and today. I flew about 3/4 gallon yesterday in the do.... low temp coupled w/low humidity = spectacular performance. I had some nice inverted stationary "pieroettes".

Mac