If the trim is secured like it is on the 124, you have to remove the door panel to tighten the screws.
When you remove the panel, you'll see 4 or 5 screws that hold the trim on. Buy some small locking washers (poor design imo) and tighten them back up.
I've had to tighten all the wood trim panels on every door because those damn screws came loose.
Good luck