Tri Mark Lock

I have had to replace 2 Tri Mark lock sets. I found that when the door was closed the bolt would slam all the way out going into the striker plate. The internal spring in the lock is so strong it crushes the nylon guide plate after a while and the bolt hits metal to metal. After a while the bolt snaps. I took a pan head screw and put it in to the wood door frame inside the striker plate stopping the bolt from extending all the way out and hitting the nylon stops on the interior of the bolt. I did this about 4 months ago so I hope this works. the first lock set that I installed only lasted 1 year. Both times I was locked inside. To get out I had to bend a rod/coat hanger and push the bolt back out of the striker plate after removing the interior door trim so I could see the lock striker bolt. Its a pain in the a$$ then you have to find a new lock set at over $100