If you are certain a new firing pin is in the gun. I would check the sear. The ultimate way to determine where to start would be to check the headspace. But a quality 12 ga headspace gauge would cost more than the gun is worth after you throw in the cost of parts. If you have a regular gunsmith he might check the headspace as a charity case.
Another way that might get you started in the right direction is to put a plastigauge on the area where the bolt meets the barrel. If the bolt is not snugging up the plastigauge will not be flat. You can get a plastigauge at any parts house for around $1.
when i remove the bolt i twist the firing pin as if it was in the gun the firing pin sticks out the front of the bolt every time
i know this is a stupid question but what is a sear is it part of the trigger mech or the bolt
I hate to be brutal but the gun isn't worth any more effort. If it was a Marlin goose gun or slug gun I would fix it. The gun has been recalled. They don't recall guns unless they are certain to fail with normal use. Even if you repaired the gun and replaced the offending screw it's worth $25.
i just took the bolt apart compleatly unthreaded the firing pin and stuck a small shim between the firing pin and the stop pin showed in picture
the shim was a thin piece of the shaft of a hex bolt so i could push the firing pin out hopefully i corrected the issue i will let ya all know
thanks for all the replies guys