I have "just" installed gold valves before... it helps, but not as good as getting stuff set up for YOU...
All my stuff.. gets done by Precision Concepts. (I have a buddy here)... and they work VERY CLOSE with us local desert racers, so they know the terrain VERY well....
(They also were willing to make my kx450, kx500 suspension swap play nice)
What precision concepts does with the stock internals, works miles better than when I was just running a gold valve...