Ok, besides barrel to paint match, my question is on efficiency regarding valves. If you were building a light weight limited paint setup what would you use, a classic valve or retro/X valve for better efficiency out of a 13/3000 tank. My first assumption is lvl 7 bolt should be slightly more efficient than a lvl 10 bolt regardless of valve, if using lvl 10 the gold spring would be more efficient than the red. But other than that is there really
any efficiency differences between those valves? Thanks
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