Thank you for the post tdemboski,

You don't have to remove the nose of the nailer to get to the trigger valve, actually. There are three roll pins that have to be removed, first (you can see them on the schematic image at the link below, reference numbers 39 and 40).

mastertoolrepair.com/pneumatic-finish-na...eqclaoeq7jremaennhg3

Once you punch out these pins the plastic trigger valve will be visible. The easiest way to remove it is to put a heavy shop rag or two in front of it, then hook up your air hose to the nailer. It will pop right out with force, so be careful!

You can see a video of how this is done on a different nailer, but the process is the same as it has a very similar trigger valve:



Hope this helps!

- MTR