Thanks for the replies guys, I really appreciate it!
Snipin_Willy, you say buggies have upper A-arms in the front?
From the look of that picture, it seems as though there is two turnbuckles (or something) replacing the top A-arm front and back.
The Revo is a pretty durable truck, I haven't broken anything major on it yet.
I've literally checked everything on the Revo, like the MMM and radio settings etc - nothing works.
But I can't really send Castle my MMM combo because technically there is nothing wrong with it, it still pushes my Revo to 50mph and makes it flip on its lid...