Mike,
Remember you sort of guided me how to shim my door in June? It has been just fine since, until I opened it today. We have had a great deal of humidity lately. Loads!
I could pull the door open though it appeared locked. It has a typical "spring bolt" (my words), not a dead bolt.
I cut a shim to fit perfectly under the strike plate out of my Handyman Club of America drill template (don't tell 'em). And then it held up better, but not enough. I added half as much more, to lift up the edge of the strike plate, just on the opening side, which is where it seemed to need it. Indeed, it locks tight, though the fit is a little snug too.
I'm not out of ideas, but I think I would prefer to listen to those of others! : )
On the postitive side, my speed and performance in improvising, in cutting out a shim to fit nicely, was alot better than I would have done a few years ago--and I did get the door to lock! It's nice to see that my practice from cutting drywall and other things hasn't gone to waste! My box-cutter is my go-to tool! I keep it at arms reach. : )
Thank goodness for those HCOA drill templates, huh? I knew one would eventually come in handy.