Reliability has probably been #1. Lots of guys talk about how fast it is (I don't know what he's done differently than other TTs), but suffers in some terrain. Generally on or near pole supports that theory. The top drivers are all so close now-a-days that any tech advantage you can get.What makes his truck substandard right now. Without 4wd to say a 2 wheel drive Geiser, mason, tsco, racer? He has not been competitive in it. Is it reliability, suspension geometry/travel? I can’t imagine it being power or traction. He almost always does well outside of his truck.