Great to have found this forum and thanks to walkbythesea for pointing me in the direction of this thread.
Recently got a Zorro having started on a 1/18 truggy with my son who loves RCs. I've also managed to get some friends into it and now we have three FTXs (Zorro, Carnage, Vantage) and a Traxxas Slash between us.
My son quickly got through 3 of the stock brushed Zorro motors! I'm in the process of upgrading to brushless with a small false start through getting a motor with too high a kv rating. I'm sure the mods will continue once the motor is sorted...