I take back the "FETs were slightly warm after 10 secs of the voltmeter across it" comment. It was fine after I wired up the final circuit, so it could be a prob somewhere with the test circuit.
I had run it around my living room for 1/2 hour. So far, so good. Batteries were slightly warm and so were the motor. No unusual heat or smell.
I didn't touch the FETs as I didn't want to go through the hassle with the MR-02 chassis. (btw, it's an overland PCB). That will be done another day, after I had more runs.
I'll post pics once I'm satisfied that everything's OK
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