RAW Rapid Unscrewed the RAW bottle... burst of air and parts I don’t know where they go

Hi everyone. I have no experience with RAW rifles, but I can’t help tinkering with them to try to tune them to my liking. I come from the FX world and I’ve never had any issues removing the bottle. Today I removed the bottle from my RAW HM1000x and was surprised by a small burst and release of air. I checked the bottle’s O-ring and it looked fine.

When I moved the gauge–fill port bracket, two parts fell out (a spring and a piston with an O-ring), but I don’t know where they came from (photos attached)... Do they belong to the compartment where the bottle screws in, or to the quick-fill port? And in what position should they be installed?
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I’m not a fan of the burst of air inherent to that design either, but it is what it is.

Yes the parts go back in the fill port side of the V-block. If memory serves insert the end with the o-ring first then the spring (as shown in the middle picture). Insert it back onto the V-block using something small and flat to compress the spring while slipping on.

-Michael