In reply to swixtt

Saito's are excellent engines. I operate 5 saito 100's and they are all working all right. Keep in mind of what the rest of the fellow modellers have mentioned about the tank. Generally speaking the tank should be lower than the carb valves if this helps you.
Also do not forget to burn at least 5 tanks of fuel in order to breakin the engine correct. Also kindly note that all Saito engnes are working smoother and smoother while time go passing by. In the factory settings the idle valve is rich so while you will finish up the breakin period then you have to make it lean in order to obtain an excellent idle. By the way all my saito's are working inverted!!! No problem at all!!!
Cheers
Johnnie