Yes they get warm and can be hard to get the gearing and timing right.
What buggy are you running? You have the 410 right?
I think the tekin pro needs a fan and body holes also as tekin are coming out with a new esc (been in the making for 2 years I think) with a fan they also see the need for them.
What surface are you running on? High grip will need more from a esc and motor.
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