Update to the power steering I did.
I had been experiencing some steering shake when turning the wheels while stopped or crawling slow. Its quite a diagnostics debacle that a lot of racers that use these sweet steering servos struggle with.
After making sure all my steering gear had no slop in it, (found the drag link to be sloppy) it still shook pretty bad. Its not a good thing, and you can break stuff for sure.
So what was wrong, is that it had too light of a torsion bar. When I turned the sterring wheel, the valve would want to go full bore, running the ram faster than you turned the wheel. That makes it surge, stop, and surge. Mind you, this is in small increments, nothing crazy, and it never shook over 2mph. Still, I need this thing to be 100% up against big rocks.
I bought another used steering servo off ebay for 85 bucks, with a .275 torsion bar in it. Solved the problem completely! It really stiffened the steering up too. Used to be able to steer with two fingers, now its back to the original feel, which is what I wanted.