Now, I am curious,
I KNOW that the racegrip cannot affect anything except the action of the 4-way.
The grip doesn't affect the valve in any new manner. Or change hammer weight. Or change the distance the hammer travels. Or change the volume or pressure of the system.
The reg/4-way/ram system doesn't use that much air anyways. And the volume of the front pneumatics is not changed by a lot. Or the pressure.
So where is your efficientcy problems coming from?
Could it be a change in spring settings or something else? I think those are your problem, and not the grip.
"If you build it, they will run"
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Owner of Patent #7610907: Paintball marker action assembly