I shot my Royale for the first time this year and got about three shots in, and all at once the gun lost all the air out the barrel. I pulled it apart and found nothing definitive. My thought was somewhere in the valve or seat was the trouble spot. I changed the tiny valve o-ring and still the same leak. I did not have the seat o-ring (apparently it did not come in my kit). I will order some tonight. I am able to blow regular compressed 120psi air through the fill port and just goes out the barrel. This happens cocked or uncocked. One time I was able to get it to take air after many disassembles. After one shot it leaked back out the barrel. I've disassembled everything short of the inside of the regulator. If anyone has an idea let me know.