Leaderboard

It doesn’t matter. However I set mine so the spring leg thru the middle is horizontal. It’s possible that the spring will walk around overtime.This is light switch screw orientation level stuff.

As gm2376 mentioned , there is no C clip used with extension. Since the spring isn't captured by a clip it can take a little practice to remove the extension without the spring flying out. There is a small hole in the end of the extension. I stick a small screwdriver in the hole which helps to capture the spring in the extension while you screw it off.