Neighbors complaining is a small problem in comparison to the issues that can become when running an engine inside.

The high pitched whine you're referring to is the engine actually coming close to what it's capable of doing. It's not bogged down. A high pitched whine is very characterstic of our 2 stroke, glow motors. 2 stroke glow engines, without exception, can always be set by ear.

I would keep a couple, five percent nitro in your fuel blend. There's a reason so few gallons of FAI fuel are sold.

Please, do not run your engine inside.