[BrianG]

Do you want to keep it as a crawler? Any of the Mamba Max's run kinda fast for that and might not have the slow speed control you can get with brushed setups. I suppose it's possible with the right gearing.

And yes, it may be difficult to get the speeds of two ESC/motors to match. Even if the motors were exactly matched kv-wise, each ESC might put out a slight difference in speed. One thing you could do to help this is to use channel mixing on your transmitter so that one ESC is on the throttle channel and the other ESC is on the AUX channel. Then, you can set the EPA and centering for each ESC seperately while being able to control both from the throttle trigger.