Let me ask you guy's something.I have looked at several Saito sizes of engines on the Horrizon Hobbies site,and engines from size .72 to at least 1.25 you always have one or two people having pretty bad problems like factory flaws in assembly,my question is ,are there certain size Saito's that I need to stay away from ,or whats the real deal(the reason being, I plan on making some future larger engine purchases but didn't know what to be cautious of) thanks guy's.