D'oh! I knew that...

Well, I didn't know all that. Thanks for the information guys! George, I didn't take any of your comments to be the least bit offensive. I'm here to learn, and I suppose I was wrong here. No, wait, I was wrong here... But that's why I'm here, so thanks for the information guys! I didn't know that about a flame arrestor, and that is what my grandfather referred to it as, I just remember it sounding like "resistor" instead of "arrestor" to me.

And obviously, those engines are more tolerant to things like that, because they are simply bigger. So, therefore, the same dust particles that would severly hurt a nitro engine probably would not hurt a regular sized engine that bad or not at all. I'm still learning at 14 years, so bear with me!