I recently picked up a 2240 pcp carbine. Upon filling it it leaked air through the barrel. Had one of these in my younger days. Never took one apart till today. Can anyone identify the brand or maker of this valve? Is the valve stem missing a seal or 2? Oring size? The 3 holes in the airtube where it's screwed to the valve seem to have burrs on the interior. What's the best way to get them down and smooth so the valve doesn't get hung up? Any help is much appreciated.
