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Old 11-21-2013, 02:30 PM   #1 (permalink)
newmaticarsenal
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Join Date: Oct 2008

DRV vents 12Gram 1st shot

I just got DRV 102 in a trade. Its venting the 12 gram in the first shot. I disassembled the valve, cleaned and lubed it and no change. It came with a glued urethane valve seat and a rubber valve seat. Both have the same result.

I read in a different post that if the valve stem has a rough spot this could cause this. It is rougher where the spring is. Can the valve stems be polished or will that create fit and binding issues? Can they be purchased and if so how much?

How much can the hammer be reshaped / polished before its mass gets to light?

Thanks for any help.
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