Quick question about soldering a motor & grinding a flat rotor spot.

[BrianG]

I would like to add that if you prefer a certain wiring sequence (I personally like it so the reds and blacks are across from each other with the white wire in the middle), you can always reverse the motor direction from within Castle Link.

And I grind a flat spot on all needed motors using a dremel. Just take a baggie and poke the shaft through. I even tape the opening just to be sure. This lets you work on the motor without the risk of getting filings inside the motor or bearings.