Your plunger tube has come loose at the rear, and it needs to be replaced, as this can cause the safety to lock in the up position, and the only way to get it to move downward is to depress the plunger - not a good thing to happen when you need the gun. I've never had one successfully be re-staked, so I'd suggest you have someone install a new plunger tube properly.
Emhasis added. Make sure whoever you hire knows what they are doing. Many of the amateurs here can do a better job than lots of the local "smiths" that work in gunshops, etc. If you don't know what right looks like then ask and we will be glad to tell you.... I'd suggest you have someone install a new plunger tube properly.
That means relieving the frame holes on the inside of the frame to create a place for metal to go when staking.I'd suggest you have someone install a new plunger tube properly.
I would rather not have a plunger tube that is staked to the frame.... I have had two become loose and required new plunger tubes, making the staking area inside the frame a little deeper, and re-staking the fastening tubes.I would much prefer the ease of replacing a loose or collapsed tube when it's staked on.
Nope! But I did not shoot them as much as my action pistol competition guns.Once the two that you repaired correctly were used, did the tubes ever come loose again??