If u can hold out a couple of weeks. I've ordered a new brushed ESC for mine
http://www.ebay.com.au/itm/320A-Brus...93c0c92&_uhb=1
ive got one in my clodbuster and so far so good. So I'm trying another one. I'll be using that with a stock 27t motor and a HPI GRU...
If u want I can get a new video. But that does not really help with the RC4wd GRU.