I ran the 7 tanks though it yesterday then started driving it slowly around the back yard , it seems to have a problem steering (expecially right) I'm thinking the servo's to weak to turn it. or maybe the linkage is wrong I'm going to move the linkage out a couple of hole's on the servo arm and see if that helps. so far it's runnig at 210-220 but I havent gone very fast yet, and it don't steer very good at all takes about 20-30 ft to turn not good that's a big arc