I put a Lvl X on my classic valve and was having problems with leakage out the back. A new regulator piston assembly fixed that. However, now I'm having trouble adjusting my velocity to be within legal range. It's perfectly happy to be firing above 330, but I'm having trouble getting it to settle below that and above 160. Is there a break in period for the piston?
Velocity issues
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You definitely need to step up to the next spring. That will bring your high velocity down. No idea why you are getting such a radical jump down, though.Comment
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Longer spring. Try the long grey one. You may also want to pull your valve apart, put a drop of oil on the piston of the bolt, and try it then. Also make sure you are lubricating your valve properly.Comment

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