Go to earlier post on this topic. I think the best thing to do is to take the white disc out completely. After you do this, there is no more valve. Very easy to do. Just carefully squeaze the two tabs together, and remove the disc that holds the screen on. Then take out the white disc, and slightly stretch out the spring to make up for the thickness of the disc. Put everything back together. The smart valve is in the last pick up from the pump. This was done by loonytune, (reputable mechanic/racer) and he put 10-15 min./miles on it afterwards, and everything ran great.
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