I broke my servo (stripped gear) first run with the stock horn. I also run the larger RSD bumper. I put a large Kimbrough saver on and have the same lack of throw problem. I can only get 20 degrees, not the 27 I am looking for. I will have to do some more testing.
Also both cars at our club had extreme traction roll problems. I was running Kevin's setup, the other guy a completely different stock one. Any ideas to tame the extra steering with the car ?