[Pittypatdugan]

I have a 28 gauge Repro with two triggers
That i am having trouble occasionally making
The top lever open the gun. Posting here because
It should open like old Parkers. I have csmc
.410 barells on it and have shot 500 or more 410
Shells and probably shot 15000
28 gauge shells with it. Top lever would not go right
Took foreend off ,bothshells were fired. Safety was frozen
Tried tapping around saftey and bumped on piece of
Wood, pulled or tried to pull frozen triggers and finally it opened

What do you all think is wrong

Thanks in advance