Gary, the hinge pins are where you need to start. No latch of any description will be reliable if your door hinges aren't tight and your door isn't aligned properly. The first thing that kills stock latches is sagging doors due to worn hinge pins (lack of periodic lubrication), causing the latches to smash into the catch plates every time the door is closed, damaging both parts. I have been able to repair badly damaged original latches, but it was very labor intensive and I have a really nice TIG welder. Doors are very challenging beasts. I have pulled my hair out (only nose, ear, and pit are readily available in my case) getting them in good working order.
Carl
