I ran brushless on my twin force for a while. I kept breaking stuff. Mostly center dogbones due to the axle deflecting the suspension arms under acceleration. This caused the drive cups to pivot up and chew away at the center dogbones until they finally twisted in two. I also stripped the stock aluminum diff gears and replaced them with $100 worth of inferno steel gears and savage spiders. I also regularly bent the front drive shaft if I landed hard on the front axle. I got over it and my e-savage was born. The TF is going to be built into a crawler sometime.