PASLODE AIR PNEUMATIC NAILGUN (PLEASE READ WHOLE AD)

Description

This is a Paslode.  For those who use nail guns, not much else needs to be said.  I have bought and sold a lot of Porter cable guns, but this Paslode feels a bit stronger.
It still shoots strong and I dont think it had a ton of hours on it when I got it 5 years ago.   During my time I have only shot about 100 nails through it.
There is only one issue that I can find....and it may be that I just dont know what I am doing.
When shooting the gun .....it seems to double fires a lot. Now, I certainly could be the cause, or it may be as simple as changing a setting on the gun, or it could be something else, but the buyer should not be surprised by this issue.  It may just be a setting on the gun that needs to be changed....or it could be that I am holding the trigger too long....or something else.  Somebody with Paslode experience will probably quickly buy it and later tell me it took 15 seconds to fix, but that is A-ok.  I dont use it enough anyway. No returns on this please.  Shipping will be pricey, and back and forth will have me losing money, so please ask any and all questions before buying. If you buy it, you read this description.
PLEASE ALSO NOTE THE SPECIAL CLIPPED PASLODE NAILS IT SHOOTS.  I HAVE A BOX OF THOSE ALSO IF YOU ARE INTERESTED.
I looked everywhere on the gun for a model number.  I could not find one. If you know where it is, please advise. Thank you very much.