unless you are a every day user of these Nail guns then you will always have difficulty firing just the 1 shot at a time, over the years I have owned many frame nailer's, and so far the Paslode are the most reliable for me, I can shoot this gun effortlessly, although I can hand the same gun over to an unexperienced person to nail with and they will rapid fire it almost every time

they have the same problem as you understanding that these guns have "bump fire systems" while holding the trigger down and bump the guns nose into what it is you are nailing is how these guns are productive for us contractors, same as with roofing guns and most any nail guns used in the construction Field, I do understand not everyone needs to nail off a 300 sq ft deck in 20 minutes or a 3 tab shingle in a blink of an eye

and that you might only need to shoot a nail or 2 at a time,
for this I would suggest a Paslode Impulse gas charged nailer, they are setup for only firing 1 nail at a time because they run on a single cycle,
when I work someone and see they cannot nail with regular nail gun, I'll give them the Impulse gun to use and get familiar with,..... though really you can shoot 1 nail at a time with any gun if you learn how to handle the gun, think of how you would use a hammer, .... you first start by tapping the nail in the wood, right! then you draw back the hammer with a few wacks,.... well with the nail gun of course you don't have to start that nail and you dont draw back, yo just use a simple bump then pull back each time, actually the gun will have a recoil that will send it back after the shot is fired, firing a nail gun by pressing the head to the wood and pulling the trigger, the tendency of the gun would be to recoil and the pressure of holding the gun to the wood, would in fact cause a rapid fire just as you are doing, There is another important over site,( air Pressure ) I like to use my frame nailer @ 100-120 psi, this gives good drive responce and sets the nail head just as I need it firm into the wood, as for my trim nail guns I set air pressure @ 75-85 psi as to not send the nail too far into the wood just sets the head under the surface enough for puddy, so the long of the short is! you are either going to have to learn to let off the trigger after each shot... or learn to bump the gun into the wood while holding the trigger and let the gun recoil away from the wood, if the safety is correct the gun will not shoot again unless the nose in compressed again :thumbsup: