Captive nut on Door Striker?

Can anyone tell me if the door strikers on my 1988 3.2 cabriolet are held in by a captive nut on the other side of the door jamb? Mine keeps loosening up, and I would like to remove it to put some thread locking compound on the threads, but I don't want to if the retaining nut is going to fall behind the sheet metal.
Alden
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Thanks for the info Guido, so if I remove the striker from the door jamb side will the plate and nut stay in place on the inside of the fender?
Alden

 

Thanks for the clarification Guido, as long as I know if I remove the striker that the entire assembly won't fall down inside the fender, I'm sure it is possible to access the inside of the fender, but I really don't want to do that much disassembly unless absolutely necessary, I just want to get the striker bolt out to add some threadlocker, and reinstall it in the proper position so that the door will close properly. I have made this adjustment several times over the years, but now the retaining nut on the other side of the fender is spinning. When I try to tighten the striker bolt, by putting some pressure on the assembly from the door jamb side, I'm able to tighten it up, but it always seems to loosen up again. I think some threadlocker will keep this from happening. Thanks again.
Alden

 

I've adjusted it several times over the years, it usually just needs a tap to get it back to the proper adjustment, followed by tightening it up, but lately it's loosening up quicker and quicker, I will check the assembly for the correct washer/gasket, I have the parts drawings on my computer but I wasn't sure (and still can't tell from the drawings) if the nut within the fender assembly was captive, I assume it's not going to fall out, but whatever was keeping it from turning behind there is no longer functioning, so I have to put outward pressure on the striker in order to get the assembly to tighten up.
Alden