Ok I have finally decided that I am going to buy a 2003 Vertical Autococker SE:

Marker: Vertical Autococker« Marker
Operation: Closed Bolt semi auto
Stock Barrel Length: 12"

Features:

Vertical feed design
Hinge frame w/ 45 grip
Autococker« Marker threaded barrel
Inline regulator
One piece 3-way
Ball detent
New style bolt w/ pull pin
Stainless steel actuating, cocking and pump rod
Velocity adjuster
Front block shroud

Barrel Mount System: Autococker« Marker threaded
Power Supply: co2, n2, or compressed air
Warranty: factory 1 year
MSRP: $399.00

Well Of course I know it doesn't cost $399, I can get it for like $239-$299, and I think I will get it in Black or Blue. Is this a good gun, Pros and Cons maybe? and can someone explain to me this whole timing thing with autotockers please?

short stroking isnt pulling the trigger far enough, and releasing it fully.

 cocker triggers need to be pullled all the way, and released all the way. that may sound hard, but you get used to it fast. and with aftermarket triggers/3-ways, the pull can be really short.

there are 3 steps to timing a cocker. not all 3 steps are needed every time.

one of them is the 3-way. unscrew the lug on the collar, and rotate it. by rotating it you adjust when the shot is fired. you can have it fire early in the pull, or later in the pull

another is adjusting the tip on the cocking rod. unscrewing or screwing the tip will make the rod part longer or shorter. this is needed if the bolt isnt coming back all the way or coming back too far , making it impossible for another ball to feed (if not coming back far enough).

you also have to adjust the lug in the hammer. if the gun isnt firing, you have to rais the lug so it will be released when you pull the trigger. if thegun is firing full auto, it means the lug is not catching, and it needs to be lowered.

there is a video at www.pbvids.com/forum

after timing your cocker once or twice, it becomes really easy, and doesnt take long at all.

hope that helped