Tightening Valve Stem Nuts
In the past, I've always just snugged my valve stem nuts down pretty good with a wrench when I change my tires/tubes.
I've heard it espoused that it's better to just snug the nut down finger-tight to allow a little play in the area where the valve stem, inner tube and wheel interact.
I decided to give that a try, but have found that every time I go to check my tire pressure (which is basically every day I ride) the nut has always backed loose a couple of turns no matter how tight I try to get it with my fingers.
What do you guys do? Maybe put some Loctite on it then snug it down finger-tight? I guess the biggest question is: does it really matter?