Whoa - puddles & wet pavement in LA..
Window, door and hatch gaskets usually need replacing - if you're in a dry climate its easy to overlook.
The trim behind those propane tanks is the belly band that is vital to have snug to the shell and its top seam caulked with Vulkem (Trempro 636)
polyurethane (use no silicone) which is not so easy to find but I've gotten it at the included link. AND the trunk lid at the rear bumper storage area is infamous for allowing water into places it doesn't belong - there the belly band should be sealed top and bottom to make sure it sheds water.
-- Okay it isn't that great of a score, they probably need to be visually inspected before they are refilled - and may need new valves to comply with current regulations but its one $$$ hit you've missed from the start!