Originally Posted by rabbitslayer
dunno but the adjustments you make to the firing valve spring tension together with the strength of the hammer spring affects the opening of the firing valve. slacker the firing valve the more/easier it will open and let more air in, tightening it and using a stronger/shorter hammer spring means less air- more shots, but it can take a lot of testing to get the right balance. Don't know about the reg not "breathing" I've only fitted Lane ones that need a breather hole drilling take it the Huma one doesn't and is a sealed system?
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