Jack----------you said that it was firm at the center??????? possibly the quickness comes from the steering gear going free from the tight(firm) spot-----I have found that a lot of catchy, quickness, etc in steering systems comes from tight spots (maybe just a little firm?) in everything from old Ford, Allis wide front tractors , trucks (semi also) go karts, to top fuel funny cars/dragsters---------also the front wheels need to be of a spacing that the king pin line to the ground should pass thru the center of the tire contact patch----------in the pics yours seem a little wide?