a couple questions

[Henn28]

Thanks in advance to the interweb mind...
1) The small drain hole near the fuel filler door hinge is plugged and holding water. I can't find an obvious exit and the piece of weed eater line I poke into it goes in perhaps one inch then stops at what feels like a sharp bend, but who knows, it could be a nest of badgers in there clogging it up. I worry about water building up somewhere I can't see, rust, etc. Has anyone cleared this, or does it even matter?

2) My second set of rear air springs have perhaps 100k on them and seem to be just fine. I actually like the way the car drives with the rear air springs (2002 e53 4.4i with self leveling rear air) and my system has been very reliable (knock on wood). I will have the back end broken down to do the subframe bushings and a 1.5' spacer lift in the next few weeks. I could easily do new air springs (I read Arnott are the way to go these days?), but maybe I could also get another 50k out of the ones I have in there? Is this a "fly to failure" part for most guys or am I pushing it already with 100k on them? They aren't too expensive, but just enough to make me think about taking my chances!

3) Any gotchas on the lower radiator hose on the 4.4 M62TU? Mine is leaking at the radiator connection so I ordered a new hose. Seems like a simple job, perhaps deceptively so? Any gotchas here? I worry that the crappy plastic parts on the radiator will explode when I look at them, like all the plastic bits on my car seem prone to do. I did a quick search for an aftermarket, all aluminum performance radiator for the e53 and couldn't find anything other than full custom jobs for $1k.