Quote Originally Posted by louisvanhovell View Post

@junglie, thank you. In the case of this 107, I would not like to store it with air in the valve, because the hammerspring needs to be tensioned (the gun cocked) to do so.
In the uncocked state, the hammer presses against the exhaust valve, and air simply escapes through the barrel when pumping.
I think the best way to maintain guns like the 107 and 108, is to shoot them regularly.
On the other hand, as 45flint pointed out earlier, a reason for this 107's relatively good survival might be the fact that it didn't work!
Actually you can leave a couple pumps in to store your 107. I cock my bolt, put two pumps in, then holding the bolt I pull the trigger and slowly lower the bolt. It will rest on valve and not trip it. Mine stores those two pumps indefinitely.