one of the screws to the automatic transmission filter did not go back in

No! All 8mm screws & 2 10mm went back-in with no problem. There was another 10mm screw along with the other 2, but different in style, to-which does'nt go back in the same place it came out of? Please! Advise The Problem?

Sorry, there is no way I can know where your extra bolt came from. Retrace your steps.

I have? Numerounce times, still the same results. Have you personaly worked on a 1991 Mazda Miada MX5 Auto. Trans. Replacing the Screne Filter?

Yes, I've worked on many. What I'm saying is that if you have an extra bolt, it has to come from somewhere -including other projects- but I can't know where. If that isn't what you're asking, could you be more specific? Is the filter housing missing a bolt hole? Is it covering a bolt hole that the previous filter housing used for mounting?