Originally Posted by pazur
The latch when compeletely closed, the distance between those two "jaws" is too small for a striker (5/8" OD).
Not clear on your problem... are you saying the gap for the post between closed jaws is smaller than the diameter of the post? Which is 5/8", the post or the gap? What is the measurement of the other (how much is the difference)? Is this a factory door post, or did you install it yourself?
Can you also get a measurement of the end of the post (how thick is the top of the "T")? I've seen some aftermarket posts that are too thick t the end and cause problems as well (this can be filed down to work better if that is the case).