You can run it down untill you get coil binding, but that defeats the purpose of the spring. If cen happened to know the specs off hand that would save me the trouble of mic'ing the spring and finding the load specs myself. The height of the spring is not going to change it's compression rate, so pre-loading with washers I don't believe will help much. But thanks for trying to help...

The situation is, I am going to try the aluminum steering assembly from GPM, now the benefits of that will not really be seen untill I get a stiffer spring and a very good servo.