I just ran the little Saito .30 again with the aforementioned 6 oz tank but used a MA 3 blade 10x5. Much to my surprise the rpm are nearly identical to the Bolly 10.5x5. I gave up after 30 minutes and tank was still half full. I just ordered a TruTurn 1.75" 3 blade spinner for it. I did a more flight like run at 5,500, 6,500 and 7,500 in flight like time spans with occasional 30 second runs at full throttle. I settled it in at 10,100 rpm about 2 clicks rich of peak, got a nice steady 2,200 rpm idle on the bottom.