I have an arrma kraton 4s its my first arrma ever. Had horrible experience with traxxas. The only issue im having is steering i installed a stronger servo 20kg and i have trouble steering while using the throtle. I think its called understeer. I changed the front o 10k but feels about the same has stock. I was thinking putting 10k front 5 k rear but will i have more issues when wheelies. My rear tires may suffer and explode when the diff starts to work? Or i am worrying for nothing.