I noticed that my slipper clutch pad was roasting when I was running it through some thick grass. I'd imagine that was probably what did your SG in.
I never even ran my truck with the stock SG and CB. I went straight to HPI's metal 47t SG and 18t CB. The ratio gives you a bit of an upper...
I had the same problem at one point. I'd already thrashed my stock servo on the first day I had it running, so I had already upgraded to the Hitec 645. While I was out bashing I noticed the same problem, it would turn fine one way, but barely turn the other direction. It turned out that the...